Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Biodiversitas Journal of Biological Diversity
EKO WIDARYANTO
Department of Agronomy, Faculty of Agriculture, Universitas Brawijaya. Jl. Veteran, Malang 65145, East Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Adaptive strategy of Stevia rebaudiana to environmental change in tropical climate based on anatomy and physiology characteristics AHMAD DHIAUL KHULUQ; EKO WIDARYANTO; ARIFFIN ARIFFIN; ELLIS NIHAYATI
Biodiversitas Journal of Biological Diversity Vol. 23 No. 11 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d231122

Abstract

Abstract. Khuluq AD, Widaryanto E, Ariffin, Nihayati E. 2022. Adaptive strategy of Stevia rebaudiana to environmental change in tropical climate based on anatomy and physiology characteristics. Biodiversitas 23: 5710-5717. High solar radiation and air temperature are the main influencing factors for plant growth and development in tropical climates. This study's objective was to understand stevia adaptation to microclimate changes at several altitudes in tropical climates. The study was conducted in a completely randomized design with altitude differences consisting of highlands, medium lands, and lowlands with ten replicates. The results showed that stevia was exposed to temperatures above 20oC during growth in the highlands by 36.46%, and in the medium lands to lowlands by 92.85%-93.96%. Meanwhile, the temperature above 30oC in the lowlands is 17.98% highest of the others. Stevia adapts to a high temperatures by increasing stomatal density, trichomes, and photosynthesis rate. Moreover, decreasing stomata (width, aperture, open percentage), leaf thickness, palisade length, xylem diameter, conductance, and transpiration rate. Stevia in the medium lands shows good adaptability with a high photosynthesis rate, percentage of open stomata 93.15%, leaf thickness 382.56 µm, and xylem diameter 30.97 µm, which is no different from the highlands. Thus, the medium lands have the potential as a new area of stevia development in a tropical climate, considering the increasingly competitive use of agricultural land in the highlands.
Genotype-by-environment interaction and tolerance of tropical maize under low nitrogen conditions DEDY SUPRIADI; YUSUF MUFTI BIMANTARA; YUNIEL MELVANOLO ZENDRATO; EKO WIDARYANTO; KUSWANTO KUSWANTO; BUDI WALUYO
Biodiversitas Journal of Biological Diversity Vol. 26 No. 8 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d260818

Abstract

Abstract. Supriadi D, Bimantara YM, Zendrato YM, Widaryanto E, Kuswanto K, Waluyo B. 2025. Genotype-by-environment interaction and tolerance of tropical maize under low nitrogen conditions. Biodiversitas 26: 3863-3874. The environment is the main factor affecting the performance of agronomy and the yield of tropical maize. In this context, the development of maize hybrids with low nitrogen (N) tolerance is crucial but challenging since genotype selection is biased toward the existence of Genotypes by Environment Interaction (GEI). Therefore, this research aimed to show the responses as well as determine the tolerance and stability of maize hybrids under low nitrogen environmental conditions in four environments. A total of 10 maize hybrids were analyzed using a randomized complete block design with three replications. The results showed that GEI was significant for most of the observed traits, including grain yield and yield components, as well as physiological traits. The percentage of G × E variance exhibited considerable differences among various traits, with values ranging from 13.68% for stomatal length to 50.00% for the number of ear rows. The low nitrogen environment significantly influenced ear performance and physiological traits, resulting in a lower average grain yield (6.98 t ha-1) compared to normal conditions (10.72 t ha-1), as well as the other traits. G01, G02, and G05 were identified as tolerant hybrids based on the ranking summary of stress tolerance indices. Meanwhile, G01 and G03 were selected as stable hybrids based on stability statistics and Genotype + Genotype × Environment (GGE). G01 (R0211) had the highest yield and remained stable-tolerant in low-nitrogen environments, demonstrating its superiority as a genotype. This study and the above genotypes could be used as genetic material for future maize breeding to develop new varieties that are both high-yielding and stable under low N, especially under tropical regions.
Co-Authors AHMAD DHIAUL KHULUQ ARIFFIN ARIFFIN Budi Waluyo DEDY SUPRIADI ELLIS NIHAYATI KUSWANTO KUSWANTO YUNIEL MELVANOLO ZENDRATO YUSUF MUFTI BIMANTARA