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All Journal Jurnal Hilirisasi IPTEKS (JHI) Buletin Ilmiah Nagari Membangun Jerami Community Development Journal: Jurnal Pengabdian Masyarakat
Afrima Sari
Universitas Andalas
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Journal : Jerami

 1 
The Viability And Vigor Of Rice Varieties (Oryza Sativa L. ) Under High Temperature Afrima Sari; Aswaldi Anwar; Nalwida Rozen
JERAMI : Indonesian Journal of Crop Science Vol 2 No 1 (2019): JIJCS
Publisher : Department of Crop Science, Faculty of Agriculture, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (452.706 KB) | DOI: 10.25077/jijcs.2.1.33-42.2019

Abstract

The growth and initial development of the plant greatly determines the survival of the plant at the next stage. This initial phase is also the most sensitive phase of abiotic stress. The level of viability and vigor to produce normal sprouts can explain the success of germination. The aim of this research is to study the temperature change to viabilily and vigor in four rice varieties. Research started from January to February 2018 at Seed Technology and Plant Physiology Laboratory Andalas University and Chemistry Laboratory University Of Padang. This research applies Factorial Experiment in Completely Random Design, where the first factor is four levels of rice varieties, Anak Daro, Batang Piaman, Cisokan and Inpari 30. The second factor is temperature level, 28 0C, 32 0C, 36 0C, 40 0C, 44 0C and 48 0C. Viability and vigor decrease when temperature increase. The optimum temperature for rice germination is 28-32 0 C for Anak Daro, 28-36 0 C for Cisokan, at 28 0 C for Batang Piaman and Inpari 30. Anak Daro and Inpari 30 can germinate until 40 0C. The highest vigor index value at 28 0 C in Cisokan and Inpari 30 (89,33 %). At 28-32 0C Cisokan, Batang Piaman and Inpari 30 has been able to germinate on the second day after planting, but Anak Daro can normal germinate on the third day after planting.
The Effect of High Temperature on α-Amylase Enzyme Activity in the Germination of Several Rice Varieties (Oryza sativa L.) Afrima Sari
JERAMI : Indonesian Journal of Crop Science Vol 3 No 2 (2021): JIJCS
Publisher : Department of Crop Science, Faculty of Agriculture, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jijcs.3.2.50-54.2021

Abstract

High temperatures can affect plant morphophysiological changes and enzyme denaturation that can interfere with the germination process. This research aims to study the effect of temperature changes on the α-amylase enzyme activity of several rice varieties germination. The research applies Factorial Experiment in Completely Random Design, where the first factor is four levels of rice varieties, Anak Daro, Batang Piaman, Cisokan, and Inpari 30. The second factor is temperature level, 28 0C, 32 0C, 36 0C, 40 0C, 44 0C and 48 0C. Results showed that the activity of the α -amylase enzymes of the four varieties increased when the temperature increased to reach the optimal temperature, and denaturation began to occur above that temperature. The highest enzyme activity of α-amylase of Anak Daro, Cisokan and Inpari 30 varieties at 48 0C is 0,14 micromol, 0,365 micromol dan 0,191 micromol. In contrast the optimum enzyme activity of α-amylase of Batang Piaman variety at a temperature of 40 0C is 0,237 micromol and when the temperature rises to 48 0C a decrease in the activity of the α-amylation enzyme is 0,138 micromol. The variation in the activity of α-amylase enzymes in the four varieties is probably due to genetic differences and sucrose content. The Batang Piaman and Cisokan varieties can only germinate up to 36 0C, while the Daro and Inpari 30 varieties can germinate up to 40 0C.
Seed Quality Selection of Several Genotypes of Brown Rice (Oryza sativa L.) under High-Temperature Stress Afrima Sari; Indra Dwipa; Aswaldi Anwar; Irfan Suliansyah; Netti Herawati
JERAMI : Indonesian Journal of Crop Science Vol 4 No 2 (2022): JIJCS
Publisher : Department of Crop Science, Faculty of Agriculture, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jijcs.4.2.34-40.2022

Abstract

Climate change impacts increasing temperature, and environmental factors can affect the capacity and rate of seed germination. This study aimed to determine and study the effect of temperature changes on the viability and vigor of brown rice seeds and the morphology of the sprouts produced. The variation of temperature used was 28-400C, and ten genotypes of brown rice seeds used were Pulen Mudiak, Pulen Kandih, Pulen Marapak, Pulen Talao, 64, Sibandung, Silalang, Timbo Abu, Labuah Baru, and Melayu. The results showed that every 10C increase in temperature affects rice germination percentage. The optimum temperature for the germination of ten genotypes of brown rice tested was a temperature range of 28-330C, with a germination value of >80%, the maximum critical temperature 370C and at 38-40 0C no brown rice seeds germinated. Pulen Marapak has the highest maximum growth potential of 90,3% at 280C and 10% at 370C. The increase in temperature also damages brown rice roots and shoots dengan the average root length is 6,7-10,1 cm and shoot length is 8-11,5 cm at 280C.
Co-Authors . Gusmini . Reflinaldon Agil Syah Putra Agustian Agustian Anwar, Aswaldi Aprisal Aprisal, Aprisal Ardi Ardi Aries Novita Putri Armansyah Armansyah Awang Al Hamdi Benni Satria Damayanti, Elok Dede Suhendra Doni Hariandi Ferry Lismanto Syaiful Gustian Gustian Gustian Gustian Haliatur Rahma, Haliatur Indra Dwipa Irfan Suliansyah J Juniarti Jumsu Trisno Meisilva Erona Sitepu Nadila Aulia Ardi Nalwida Rozen Nandita Samaralya Tori Netti Herawati Raesi, Syahyana Ramadhan, Nugraha Rika Hariance Ryan Budi Setiawan Ryan Dwi Setyawan Shalati Febjislami Shinta Mulyana Siti Rahmah Sutoyo Sutoyo Sutoyo Sutoyo Syahyan Raesi Trizelia . Yaherwandi