cover
Contact Name
Fridiyanto
Contact Email
ijierm19@gmail.com
Phone
+6282277629282
Journal Mail Official
ijierm19@gmail.com
Editorial Address
Jl. Rambutan, Caru Hamlet, Pendem Village, District Junrejo, Postal Code 65321, Batu City, East Java, Indonesia
Location
Kota batu,
Jawa timur
INDONESIA
International Journal of Islamic Education, Research and Multiculturalism (IJIERM)
ISSN : 26563630     EISSN : 27227049     DOI : DOI: https://doi.org/10.47006/ijierm
The International Journal of Islamic Education, Research and Multiculturalism (IJIERM) was formed in 2019 with number SK: 0005.26563630 / JI.3.1 / SK.ISSN / 2019.03. P-ISSN:2656-3630 now for E-ISSN:2722-7049 in management. IJIERM is a Journal relating to Education, Research, Islamic Education, Multicultural Education, Multicultural, Socio-Cultural, and Religious. Study and assessment conducted by experts (peer-review). This journal is affiliated to the Islamic and Multicultural Education Foundation located in Malang, East Java. The purpose of this journal is to become a forum for writing related to education, research and multiculturalism.
Articles 280 Documents
EFFECT OF Zanthoxylum acanthopodium DC EXTRACT ON THE INCREASE OF BRAIN CELLS IN THE SUBSTANTIA NIGRA OF WISTAR RATS THAT ARE ROTENONE-INDUCED hafizha, Shalli; Halim, Binarwan; Chiuman, Linda
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 6 No 3 (2024)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v6i3.413

Abstract

Parkinson's disease (PD) is a neurodegenerative disorder due to the decline of dopaminergic neurons in the substantia nigra, with motor and non-motor symptoms. Oxidative stress, inflammation, and mitochondrial damage play a role in its pathogenesis. andaliman fruit (Zanthoxylum acanthopodium DC), rich in alkaloids and flavonoids, has potential as an antioxidant with neuroprotective effects. The purpose of the study was to determine the effect of andaliman fruit extract (Zanthoxylum acanthopodium DC) on the increase of brain cells in the substantia nigra of rotenone-induced Wistar rats as a Parkinson's model. This research uses an experimental quantitative study with a post-test control group design. Data were analyzed using One Way ANOVA with a significance level of p < 0.05. The results showed that 70% ethanol extract of andaliman fruit (Zanthoxylum acanthopodium DC) can reduce the number of necrosis cells in the brain. On the 29th day, the average number of necrosis cells in each group was 0.4±0.54 (K-), 4.8±0.83 (K+), 4.4±1.14 (P1), 3.4±0.54 (P2), and 1.2±0.44 (P3). The administration of extracts at doses of 150 mg/kgBB, 300 mg/kgBB, and 450 mg/kgBB can increase the regeneration of brain cells that experience necrosis. Histopathological observations showed that 70% ethanol extract of andaliman fruit improved the histological structure of brain cells in the substantia nigra area.
An Analysis of Transportation Mode Choice in Bitung City Using Structural Equation Modeling Lefrandt, Lucia Ingrid Regina; Punuhsingon, Charles S. C.
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 6 No 3 (2024)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v6i3.402

Abstract

Transportation is the foundation of daily life and is vital to a region's economic and social development. Transportation is a crucial aspect of human life, facilitating connections between locations. Mode choice is a critical consideration in transportation planning, influenced by cost, travel time, and comfort factors. This study aims to analyze the characteristics of travelers in Bitung City Regency and the factors influencing their choice of transportation modes in 2024. The research involved distributing an online questionnaire to 200 respondents and gathering data on various latent variables, including Travel Cost, Travel Time, Vehicle Condition, and Comfort Level. The analysis used Structural Equation Modeling (SEM) with SPSS and AMOS software. The study revealed a significant gender disparity among the respondents, with men dominating the demographics at 60%. Most respondents were from the 26–35-year age group (40%), had a private status (35%), and had completed high school or vocational school (35%). Motorbikes were the most common regarding vehicle ownership, with 60% of respondents owning one. The SEM analysis revealed significant factors influencing transportation mode choice. Travel Time (WT) had a negative effect on Comfort Level (TK) and Vehicle Condition (KK), with t-values of -0.684 and -0.895, respectively, indicating that longer travel times reduce comfort and vehicle satisfaction. Vehicle Condition (KK) significantly influenced the preference for Online Transport (TO) and Conventional Ojek (OK) with t-values of 0.597 and 0.278, respectively. Comfort Level (TK) significantly impacted the preference for Public Transport (TU), Conventional Ojek (OK), and Online Transport (TO) with t-values of 0.728, 0.530, and 0.301, respectively. The findings of this research have practical implications, suggesting that enhancing travel time efficiency, vehicle conditions, and overall comfort can significantly influence mode choice preferences. These insights can engage and interest transportation planners, policymakers, and researchers, guiding future transportation planning and policymaking in Bitung City Regency.
The Responsibility of the Foreman for the Sale of Project Remaining Materials According to Wahbah Az-Zuhaili Lubis, Ahmad Riansyah; Pulungan, Sahmiar
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 7 No 1 (2025)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v7i1.404

Abstract

Masalah penjualan material sisa proyek merupakan bagian penting dalam manajemen proyek dan akuntansi yang memerlukan pengawasan yang bertanggung jawab oleh mandor. Konsep akuntansi yang sesuai dengan prinsip syariah, seperti yang disarankan oleh Wahbah Az-Zuhaili dalam konteks Islam, membangun dasar etika untuk manajemen yang selaras dengan ajaran Islam. Tujuan dari penelitian ini adalah untuk menentukan pertanggungjawaban mandor atas penjualan material sisa menurut Wahbah Az-Zuhaili. Jenis penelitian ini adalah penelitian lapangan. Metodologi penelitian menggunakan jenis penelitian lapangan, yaitu peneliti langsung turun ke lokasi yang akan diteliti. Lokasi penelitian berada di Proyek Pembangunan Villa Mentari Kempinski, Jalan Seksama Simpang Limun Medan. Waktu penelitian dilaksanakan dari bulan Maret hingga April 2024. Untuk teknik pengumpulan data, penulis melakukan studi pustaka (library research) dan wawancara langsung dengan Mandor Proyek mengenai penjualan material sisa proyek. Setelah data dikumpulkan, penulis menganalisis dan menarik kesimpulan dari data yang terkumpul. Hasil penelitian menunjukkan bahwa setelah meneliti kerugian pada proyek pembangunan Mentari Kempinski, berbagai alasan yang menyebabkan kerugian tersebut dapat diketahui. Kesalahan mungkin terjadi dalam memperkirakan kebutuhan bahan bangunan, yang mengakibatkan kelebihan kayu dan bambu. Menurut Az-Zuhaili, mandor harus bertanggung jawab atas tindakannya, baik di dunia dengan menerima sanksi sesuai dengan kebijakan perusahaan, maupun di akhirat di mana dia akan dimintai pertanggungjawaban oleh Allah SWT atas pelanggaran amanah. Pertanggungjawaban ini mencakup pengembalian barang atau uang yang diperoleh dari penjualan ilegal, serta menunjukkan penyesalan dan komitmen untuk tidak mengulangi tindakan serupa.Kata Kunci: Etika, Manajemen, Material Proyek, Pertanggungjawaban, Wahbah Az-Zuhaili The problem of selling project waste materials is an important part of project management and accounting that requires responsible supervision by the foreman. The concept of sharia-compliant accounting, as suggested by Wahbah Az-Zuhaili in the context of Islam, builds an ethical foundation for management that is in line with Islamic teachings. The purpose of this study is to determine the foreman's accountability for the sale of Wahbah Az-Zuhaili's waste materials. This type of research is a type of field research. The research methodology uses a type of field research, namely the researcher goes directly to the place to be studied. Research location in the project The research location is at the Villa Mentari Kempinski Building Project, Jalan Seksama Simpang Limun Medan, The research time was carried out from March to April 2024. For data collection techniques, the author conducted a literature study (library research) and direct interviews with the Project Foreman regarding the sale of remaining project materials. After the data was collected, the author analyzed and drew conclusions from the collected data. The results of the study found that after examining the losses in the Mentari Kempinski construction project, various reasons that contributed to the losses could be determined. Errors may have occurred in estimating the need for building materials, leading to excess wood and bamboo. According to Az-Zuhaili, the foreman must be responsible for his actions, both in the world by accepting sanctions in accordance with company policy, and in the afterlife where he will be held accountable by Allah SWT for violating the mandate. This accountability includes returning goods or money obtained from illegal sales, as well as showing regret and commitment not to repeat similar actions.Kata Kunci: Ethics, Management, Project Materials, Accountability, Wahbah Az-Zuhaili
The Relationship Between Debt, Default, and Receivables in Contract Law in Indonesia Januar, Inri; Santoso, Budi; Sulistyarini, Rachmi; Qurbani , Indah Dwi
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 6 No 3 (2024)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v6i3.406

Abstract

Treaty law recognizes the terms debt and receivables, but in the legal regulations of agreements or beyond it, it turns out that what is meant by debt and receivables is very limited in its explanation. Likewise, default whose definition appears only limited to the opinions of experts. Regulation will be very important because debts, receivables and defaults have legal consequences for creditors or debtors. Thus, it is very necessary to include the definition of debt, receivables and defaults in laws and regulations to provide certainty and legal protection for the parties to the engagement, especially the law of agreements. The type of research used is normative juridical research using primary legal materials, namely laws and regulations, secondary, namely books by law scholars and tertiary materials in the form of dictionaries. The approach used is a conceptual approach and a legislative approach. From the results of the study, there is a void in norms regarding receivables. Receivables in general cannot arise without obligation, for certain conditions receivables may arise without prior obligation. Receivables are not only the opposite of the word debt. Receivables are the right to sue given by law. In this case, receivables can be interpreted as protection provided by the state to the subject in the law of the agreement. Default is not the same as debt and a defaulter cannot have receivables.
The Existence of Amicus Curiae in Constitutional Court Decisions: A Participation Theory Perspective Annisa Mayang Tyaningrum; Safa’at, Muchamad Ali; Prasetyo, Ngesti Dwi
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 7 No 1 (2025)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v7i1.429

Abstract

Penelitian ini menganalisis peran dan dampak amicus curiae dalam mendorong proses peradilan yang partisipatif di Mahkamah Konstitusi melalui teori partisipasi. Sebagai mekanisme non-litigasi, amicus curiae memperkaya perspektif peradilan, khususnya dalam kasus-kasus kepentingan publik, dengan memberikan pandangan hukum yang imparsial. Temuan menunjukkan bahwa amicus curiae meningkatkan kualitas putusan, transparansi, dan akuntabilitas, sehingga memperkuat peran Mahkamah dalam mempromosikan sistem hukum yang demokratis dan inklusif. Penelitian ini menyoroti bagaimana amicus curiae mendukung proses peradilan yang partisipatif di Mahkamah Konstitusi dengan menggunakan teori partisipasi. Awalnya berkembang dalam perencanaan kota, teori ini menekankan pada inklusivitas dan akuntabilitas dalam pengambilan keputusan. Diakui dalam Pasal 5 Ayat (1) Undang-Undang Nomor 48 Tahun 2009, amicus curiae memberikan pandangan imparsial yang berbeda dari Para Pihak Terkait, sehingga memastikan keterwakilan masyarakat yang beragam dalam proses hukum. Kehadiran amicus curiae meningkatkan transparansi, akuntabilitas, dan kualitas putusan peradilan. Teori partisipasi selaras dengan perannya dalam mendorong masukan publik yang beragam untuk mencapai hasil hukum yang seimbang. Kasus-kasus penting, seperti persidangan Soeharto, menunjukkan nilai praktisnya dalam memastikan keadilan peradilan. Institusionalisasi amicus curiae memperkuat nilai-nilai demokrasi dan partisipasi publik dalam peradilan. Amicus curiae memainkan peran strategis dalam meningkatkan transparansi, akuntabilitas, dan inklusivitas peradilan di Mahkamah Konstitusi.Kata kunci: Mahkamah Konstitusi, Amicus curiae, Partisipasi Publik, Transparansi, Akuntabilitas This study analyzes the role and impact of amicus curiae in fostering participatory judicial processes within the Constitutional Court through participation theory. As a non-litigation mechanism, amicus curiae enrich judicial perspectives, particularly in cases of public interest, by providing impartial legal insights. Findings reveal that amicus curiae enhances decision quality, transparency, and accountability, reinforcing the Court’s role in promoting a democratic and inclusive legal system. This study highlights how amicus curiae support participatory judicial processes within the Constitutional Court, using participation theory. Initially rooted in urban planning, this theory emphasizes inclusivity and accountability in decision-making. Recognized under Article 5 Paragraph (1) of Law Number 48 of 2009, amicus curiae provide impartial insights distinct from Related Parties, ensuring diverse societal representation in legal processes. The inclusion of amicus curiae enhances judicial transparency, accountability, and decision quality. Participation theory aligns with its role in fostering diverse public input for balanced legal outcomes. Notable cases, such as the Soeharto trial, demonstrate its practical value in ensuring judicial fairness. Institutionalizing amicus curiae strengthens democratic values and public participation in the judiciary. Amicus curiae plays a strategic role in enhancing judicial transparency, accountability, and inclusivity in the Constitutional Court. Its alignment with participation theory underscores its importance in promoting constitutional justice and addressing public interest cases.Keywords: Constitutional Court; Amicus curiae; Public Participation, Transparency, Accountability
Effectiveness of Durian Fruit Seed Extract (Durio Zibethinus) on Kidney Function and Histopathology of Rats Induced by Wistar Streptozotocin Virgoh, Livia; Suyono, Tan; Chiuman, Linda; Nurlaela, Lia; Kosasih, Michaela; lister , Clarissa
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 6 No 3 (2024)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v6i3.430

Abstract

Diabetes mellitus (DM) is a metabolic disease characterized by hyperglycemia due to impaired insulin secretion or action. Diabetic nephropathy, a microvascular complication of type 2 DM, causes damage to kidney function due to progressive hyperglycemia. This study analyzed the potential of durian seed extract in reducing blood sugar levels (KGD) and improving kidney function and histopathological features in streptozotocin (STZ)-induced Wistar rats. Rats were divided into six groups: normal, positive control (STZ + metformin), negative control (STZ), and three treatment groups with durian seed extract doses of 150, 300, and 450 mg/kgBB. The extract was given for 14 days, followed by examination of kidney function and histopathology. The results showed that a dose of 450 mg/kgBB was most effective in reducing KGD, equivalent to metformin, which could improve kidney function and histopathology. Durian seed extract 450 mg/kgBB has the potential as an effective antidiabetic in reducing kidney damage.
An Examination of Human Rights Related to the Protection of Debtor Customer Data and Information Through Bank Secrecy Rules Putriyanti, Erma Defiana; Budiono, Abdul Rachmad; Sukarmi, Sukarmi; Dewantara, Reka
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 7 No 1 (2025)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v7i1.389

Abstract

Penelitian ini bertujuan untuk mengkaji dan menganalisis bagaimana perlindungan data dan informasi pelanggan debitur dalam perspektif hak asasi manusia. Metode penelitian yang digunakan adalah penelitian hukum dengan pendekatan perundang-undangan, pendekatan filosofis, dan pendekatan konseptual. Hasil penelitian ini menunjukkan bahwa perlindungan data dan informasi pelanggan debitur dilakukan dengan menerapkan aturan kerahasiaan bank. Namun, aturan kerahasiaan bank di Indonesia masih tidak memadai, karena ruang lingkup perlindungannya sempit, hanya mencakup pelanggan penyimpan dan simpanan dari pelanggan penyimpan. Hal ini telah melanggar hak-hak pelanggan debitur. Perlindungan data dan informasi merupakan hak asasi manusia yang fundamental, sebagaimana diakui dalam UDHR dan ICCPR, serta di Indonesia mencerminkan Pancasila sila kedua, yang dilindungi oleh konstitusi, hukum hak asasi manusia, dan undang-undang perlindungan data pribadi. Sebagai negara hukum, Indonesia menjunjung pendekatan yang seimbang terhadap hak asasi manusia, memastikan hak pelanggan debitur untuk perlindungan data sambil mempertimbangkan hak publik untuk mengakses informasi tertentu dalam kasus-kasus mendesak. Keseimbangan ini sejalan dengan teori utilitarianisme hukum alam, yang menekankan baik pada privasi maupun transparansi yang diperlukan.Kata Kunci: Perlindungan Hukum, Data Pribadi, Debitur, Perbankkan This research aims to examine and analyse how the protection of debtor customer data and information in the perspective of human rights. The research method used is legal research with a statutory approac h, philosophical approach and conceptual approach. The results of this study indicate that the protection of debtor customer data and information is by implementing bank secrecy rules. However, the rules of bank secrecy in Indonesia are inadequate, because the scope of protection is narrow, covering only depositing customers and deposits of depositing customers. This has violated the rights of debtor customers. The protection of data and information is a fundamental human right, as recognized in the UDHR and ICCPR, and in Indonesia, it reflects the 2nd Precept of Pancasila, safeguarded by the constitution, human rights law, and personal data protection law. As a rule-of-law state, Indonesia upholds a balanced approach to human rights, ensuring debtor customers' right to data protection while considering the public's right to access certain information in urgent cases. This balance aligns with the utilitarian theory of natural law, emphasizing both privacy and necessary transparency.Keywords: Legal Protection, Personal Data, Debtors, Banking
The Impact of Work-Life Balance on Employee Performance and Satisfaction in Start-Up Companies Nugroho, Dony Ari
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 7 No 1 (2025)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v7i1.390

Abstract

As of January 11, 2024, Indonesia has 2,566 startups, ranking sixth in the world and first in Southeast Asia. Startups in Indonesia focus on technological innovation with the goal of rapid growth, often funded by venture capital or crowdfunding. Despite facing financial challenges and competition, startups have the potential to disrupt industries. However, they also face challenges in maintaining operational balance and employee well-being, which impacts performance and satisfaction. The aim of this research is to analyze the extent to which the balance between work and personal life affects employee performance and satisfaction in startup companies. This study uses a quantitative method with data collection through questionnaires. The population of the study consists of employees from startup company X, with a sample selected using purposive sampling, resulting in 100 respondents. The data collected was analyzed using SPSS for statistical analysis and hypothesis testing to present objective and accurate research results. The findings show that work-life balance positively influences employee performance and satisfaction in startup companies. Employees who are able to balance work and personal life tend to be more productive and satisfied, as this balance reduces stress, increases motivation, and improves well-being. Therefore, startup companies need to create an environment that supports work-life balance to enhance employee performance and satisfaction.
The Influence Of Organizational Culture And Leadership on The Performance of Bank Syariah Indonesia Frontliners With Motivational Mediation Yasmin, Rani Putri; Kartono, Kartono; Hartono, Edy
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 7 No 1 (2025)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v7i1.405

Abstract

Setiap karyawan wajib memenuhi target perusahaan, termasuk frontliner Bank Syariah Indonesia yang berperan dalam layanan dan bisnis perbankan. Kinerja mereka dipengaruhi oleh budaya organisasi, kepemimpinan, dan motivasi berprestasi. Penelitian ini bertujuan menganalisis pengaruh budaya organisasi dan kepemimpinan terhadap kinerja frontliner dengan motivasi berprestasi sebagai mediasi. Metode yang digunakan adalah kuantitatif dengan pendekatan kausal. Sampel penelitian sebanyak 100 responden menggunakan kuesioner skala Likert 1-5, dengan analisis regresi untuk menguji hubungan antarvariabel. Hasil penelitian menunjukkan bahwa budaya organisasi dan kepemimpinan berpengaruh signifikan terhadap kinerja karyawan, baik secara langsung maupun melalui motivasi berprestasi sebagai variabel mediasi. Temuan ini menegaskan bahwa lingkungan kerja yang baik dan kepemimpinan yang efektif dapat meningkatkan semangat kerja dan produktivitas karyawan. Kesimpulannya, peningkatan budaya organisasi dan efektivitas kepemimpinan dapat meningkatkan motivasi berprestasi dan kinerja karyawan di perbankan syariah, sehingga mendukung pencapaian target perusahaan secara optimal.Kata Kunci: Budaya Organisasi, Kepemimpinan, Motivasi Berprestasi, Kinerja Karyawan, Bank Syariah Indonesia. Every employee must meet company targets, including Bank Syariah Indonesia frontliners who play a role in banking services and business. Their performance is influenced by organizational culture, leadership, and achievement motivation. This study aims to analyze the effect of organizational culture and leadership on frontliner performance with achievement motivation as mediation. The method used is quantitative with a causal approach. The research sample was 100 respondents using a 1-5 Likert scale questionnaire, with regression analysis to test the relationship between variables. The results showed that organizational culture and leadership have a significant effect on employee performance, both directly and through achievement motivation as a mediating variable. This finding confirms that a good work environment and effective leadership can increase employee morale and productivity. In conclusion, improving organizational culture and leadership effectiveness can increase employee achievement motivation and performance in Islamic banking, thus supporting the achievement of company targets optimally.Keywords: Organizational Culture, Leadership, Achievement Motivation, Employee Performance, Bank Syariah Indonesia.
Effect of Seedling Ages and Generations on The Morphology and Productivity of Tropical Alfalfa (Medicago sativa L. cv Kacang Ratu BW) Kharunisa, Laras; Salsabila, Zidna Ilma; Juniardi, Ricky; Astuti, Andriyani; Suwignyo, Bambang
International Journal of Islamic Education, Research and Multiculturalism (IJIERM) Vol 7 No 1 (2025)
Publisher : The Islamic Education and Multiculturalism Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47006/ijierm.v7i1.416

Abstract

The productivity of ruminant livestock is highly dependent on the availability of quality forage feed that meets their needs. Alfalfa is palatable and rich in nutrients, minerals and vitamins that livestock may require. This study aimed to investigate the effect of age of tropical alfalfa seedlings and generations on the morphology and productivity of tropical alfalfa (Medicago sativa L. cv Kacang Ratu BW). The research design is Completely Randomized Design using 2 × 2 with two factorial and three replications. Evaluation of the effect of seedling ages (1 month and 2 months) and generations (F2 and F3) on plant growth (height of plants, branches, and leaves of plants) and productivity were recorded. The differences between treatments were continued, analysis with Duncan’s Multiple Range Test is used. The result showed that seedling ages in 2 months produced the highest plant productivity (P<0,05). Among the generations tested, F3 emerged as the top plant productivity (P<0,05). Plants productivity consisted of height of plants, number of branches, number of leaves. The study concluded that planting alfalfa seedlings at two months old significantly influences plant height and leaf count, resulting in better overall growth. However, the influence of generation, specifically F3, affects plant height. The number of branches does not significantly affect either seedling age or generation.