利用抗逆性指标鉴定小麦耐热性基因型

Surakshya Sharma, Eishaina Chaudhary, Pratik Gautam, Rashmi Poudel, Sushma Sapkota, Sweksha Ghimire, Bibisha Timalsina, Puja Roka, Kriti Bhattarai, Manoj Pariyar, Kapil Neupane, Anil Aryal, Ganesh G.C, Mukti Ram Poudel, Radhakrishna Bhandari
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引用次数: 0

摘要

利用抗逆性指标鉴定小麦耐热性基因型。由Bhairahawa国家小麦研究计划(NWRP)提供的共20个小麦基因型在灌溉和热胁迫环境下进行了评估。这些基因型包括3个Bhairahawa系(BL)、15个尼泊尔系(NL)和2个商业品种——brikuti和Gautam。这项研究是在巴利哈瓦的农业和动物科学研究所(IAAS)进行的,采用了阿尔法晶格设计。结果表明:与灌水条件相比,热胁迫条件下小麦籽粒平均产量降低24.82%;值得注意的是,在灌溉和热胁迫条件下,平均生产力(MP)、几何平均生产力(GMP)、抗逆性指数(STI)和产量指数(YI)均与产量呈极显著正相关。耐热性指数(TOL)与应力敏感性指数(SSI)在热胁迫条件下呈负相关。基因型NL 1384表现出最高的MP、GMP和STI,紧随其后的是NL 1417,是最稳定和高产的基因型。这些发现表明,这些基因型在灌溉和热胁迫条件下都有潜力获得高产。双图分析显示,MP、STI、GMP、YI和产量稳定指数(YSI)与灌溉环境产量(Ys)和热胁迫环境产量(Yp)呈正相关,与胁迫敏感性指数(SSI)、TOL和还原性(Red)呈负相关。因此,这些指标可用于小麦在灌溉和热胁迫条件下的基因型评价。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Identification of Heat Stress Tolerant Wheat Genotype Using Stress Tolerance Indices
This experiment was conducted to identify heat stress tolerant wheat genotypes using stress tolerance indices. A total of twenty wheat genotypes, provided by the National Wheat Research Program (NWRP) in Bhairahawa, were evaluated in both irrigated and heat stress environments. These genotypes comprised three Bhairahawa Lines (BL), fifteen Nepal Lines (NL), and two commercial checks—Bhrikuti and Gautam. The research was conducted at the Institute of Agriculture and Animal Science (IAAS) in Paklihawa, using alpha lattice design. Results showed that the mean grain yield of wheat was reduced by 24.82% under heat stress conditions as compared to irrigated conditions. Notably, mean productivity (MP), geometric mean productivity (GMP), stress tolerance index (STI), and yield index (YI) exhibited strong and highly significant positive correlations with yield under both irrigated and heat stress conditions. In contrast, tolerance index (TOL) and stress susceptibility index (SSI) displayed negative correlations under heat stress conditions. Genotype NL 1384 exhibited the highest MP, GMP, and STI, closely followed by NL 1417, establishing them as the most stable and productive genotypes. These findings suggest that these genotypes have the potential to be selected for high yields under both irrigated and heat stress conditions. The biplot analysis showed a positive correlation of MP, STI, GMP, YI, and yield stability index (YSI) with yield in the irrigated environment (Ys) and yield in the heat stress environment (Yp), and a negative correlation of stress susceptibility index (SSI), TOL, and reduction (Red). Hence, these indices could potentially be used for the evaluation of wheat genotypes under both irrigated and heat stress conditions.
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来源期刊
Journal of Soil, Plant and Environment
Journal of Soil, Plant and Environment Agricultural Sciences-Environmental Sciences
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期刊介绍: Journal of Soil, Plant and Environment is an open peer-reviewed journal that considers articles and review articles on all aspects of agricultural sciences. Aim and Scope Journal of Soil, Plant and Environment (ISSN: 2957-9082) is an international journal dedicated to the advancements in agriculture throughout the world. The goal of this journal is to provide a platform for scientists, students, academics and engineers all over the world to promote, share, and discuss various new issues and developments in different areas of agricultural sciences. All manuscripts must be prepared in English and are subject to a rigorous and fair peer-review process. Accepted papers will appear online within 3 weeks followed by printed hard copy. Journal of Soil, Plant and Environment (ISSN: 2957-9082) publishes original papers including but not limited to the following fields: Soil–plant relationships; crop science; soil science; biometry; crop, soil, pasture, and range management; crop, forage, and pasture production and utilization; turfgrass; agroclimatology; agronomic models; integrated pest management; integrated agricultural systems; and various aspects of entomology, weed science, animal science, plant pathology, and agricultural economics as applied to production agriculture. We are also interested in: 1) Short Reports– 2-5 pages where the paper is intended to present either an original idea with theoretical treatment or preliminary data and results; 2) Book Reviews – Comments and critiques of recently published books in agricultural sciences.
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