Significance of yield sustainability to develop climate smart wheat (Triticum aestivum) in India

IF 0.3 4区 农林科学 Q4 AGRICULTURE, MULTIDISCIPLINARY Indian Journal of Agricultural Sciences Pub Date : 2023-09-26 DOI:10.56093/ijas.v93i9.137708
DEVINDER MOHAN, HANIF KHAN, VISHNU KUMAR, RAJ KUMAR, AJAY VERMA, RANDHIR SINGH, GYANENDRA SINGH
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Abstract

To ensure food security in India, not only the wheat (Triticum aestivum L.) productivity but yield sustainability is also crucial especially when the production environments are quite diverse. An experiment was conducted to examined multi-environment wheat yield trial data of popular wheat cultivars in two agro-climatically diverse regions i.e. north- western plains zone (NWPZ) and central zone (CZ) under timely-sown (TS) and late-sown (LS) conditions with an aim to differentiate yield and yield sustainability at the level of 4 production environment, 11 prominent locations and 7 crop years. Wheat productivity matched in both zones; yet the level of yield-sustainability was much less in warmer climate of CZ. Yield sustainability was poorest in late-sown wheat of CZ and the drop in sustainability index (SI) was realized in locations, years and genotypes. For grain yield; locations and location-year interaction mattered most in each production environments but the years were crucial only in NWPZ-TS. Results showed that yield sustainability of test sites can not be adjudged by its productivity alone. Location status was associated with the yield sustainability only in NWPZ. Substantial drop in sustainability could be noticed in some crop seasons of CZ but deviations in NWPZ were smaller. In test sites, the causative factors associated with yield-sustainability varied under different production environments. Genotype-year interaction was effective in each situation except CZ-LS where only the crop year variations were supreme. Variations in locations and genotypes mattered most in NWPZ-TS whereas the crop year deviations were impactful in NWPZ-LS and CZ-TS environments. Based on the results; prospect of improvisation and breeding strategy have been suggested to select suitable production sites and the genotypes.
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产量可持续性对印度发展气候智能型小麦(Triticum aestivum)的意义
为了确保印度的粮食安全,不仅小麦(Triticum aestivum L.)的生产力,而且产量的可持续性也至关重要,特别是在生产环境非常多样化的情况下。为了区分4个生产环境、11个突出位置和7个作物年的产量和产量可持续性,在西北平原区和中部区两个农业气候不同区域,对不同小麦品种在早播(TS)和晚播(LS)条件下的多环境产量试验数据进行了研究。两个区域的小麦产量相匹配;然而,在气候较暖的CZ地区,产量可持续性水平要低得多。CZ晚播小麦产量可持续性最差,可持续性指数(SI)在地点、年份和基因型上均呈下降趋势。粮食产量;地点和地点-年交互作用在每个生产环境中都是最重要的,但年份仅在NWPZ-TS中至关重要。结果表明,试验点的产量可持续性不能仅由其生产力来判断。地理位置状况与产量可持续性的关系仅在西北旱区存在。CZ部分作物季节可持续性显著下降,但NWPZ偏差较小。在不同的生产环境下,与产量可持续性相关的致病因素有所不同。基因型-年互作在除CZ-LS外的所有情况下均有效,其中只有作物年变异是最重要的。在NWPZ-TS环境中,地理位置和基因型变异影响最大,而作物年偏差在NWPZ-LS和CZ-TS环境中影响最大。根据结果;提出了选择适宜的生产地点和基因型的育种策略。
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来源期刊
Indian Journal of Agricultural Sciences
Indian Journal of Agricultural Sciences 农林科学-农业综合
CiteScore
0.80
自引率
25.00%
发文量
273
审稿时长
6 months
期刊介绍: The Indian Journal of Agricultural Sciences publishes papers concerned with the advancement of agriculture throughout the world. It publishes original scientific work related to strategic and applied studies in all aspects of agricultural science and exploited species, as well as reviews of scientific topics of current agricultural relevance. Specific topics of interest include (but are not confined to): genetic resources, all aspects of crop improvement,crop production,crop protection, physiology, modeling of crop systems, the scientific underpinning of agronomy, engineering solutions, decision support systems, land use, environmental impacts of agriculture and forestry, impacts of climate change, rural biodiversity, experimental design and statistical analysis, the application of new analytical and study methods (including molecular studies) and agricultural economics. The journal also publishes book reviews. Articles are accepted on the following broad disciplines: Agric. Engineering & Technology, Agric. Social & Economic Sci., Agronomy, Biometry, Biosciences, Cytology, Ecology, Environmental Sciences, Fertilization, Forestry , Genetics, Horticultural Sciences, Microbiology, Pest, Weed Control etc., Molecular Biology, Plant Pathology, Plant Breeding, Physiology and Biochemistry, Soil Sciences, Special Cultivation Technology, Stress Breeding, Agric. extension, and Cell Biology.
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