热干旱环境下光热不敏感豇豆基因型的鉴定与特性研究

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.v93i9.138073
AJAY KUMAR VERMA, D K SAMADIA, HANUMAN RAM, CHET RAM, GANGADHARA K, P S GURJAR
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引用次数: 0

摘要

绿荚高产、两用型、早熟和光热不敏感是豇豆(Vigna unguiculata, L.)的主要育种目标。Walp。]。光热敏感性使这种作物易受光周期和温度波动的影响,特别是在炎热干旱地区,从而极大地影响其产量潜力。因此,本研究旨在寻找适合炎热干旱环境下所有季节的光热不敏感精英基因型。试验于2019 - 2020年和2020-21年雨季和夏季在比卡内尔icar中央干旱园艺研究所进行。在不同的环境中,不同的物候和产量性状在不同的基因型之间存在很大的差异。在被评估的基因型中,AHCP-1-4-1和AHCP-2-3对光热不敏感,因为它们能够在低至10℃和高至46℃的温度下开花和结荚。花粉活力研究表明,在11°C和46°C条件下,AHCP-1-4-1和AHCP-2-3在正常花粉管生长条件下,花粉活力分别为83.72%和88.24%和81.58%和85.71%。所鉴定的遗传资源将有助于培育光热不敏感品种,并将在炎热干旱地区的所有季节和地点提高豇豆的生产力和优质豆荚产量。
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Identification and characterization of photo-thermo insensitive cowpea (Vigna unguiculata) genotypes for hot arid environment
High green pod yield, dual purpose type, earliness and photo-thermo insensitivity are the major breeding objectives of cowpea [Vigna unguiculata (L.) Walp.]. Photo-thermo sensitivity makes this crop vulnerable to photoperiod and temperature fluctuations particularly in hot arid regions, thereby affecting its yield potential drastically. Therefore, the present study was aimed to identify such elite genotypes with photo-thermo insensitivity, which can fit well across all seasons under hot arid environment. The experiments were conducted at ICAR-Central Institute for Arid Horticulture, Bikaner during rainy and summer seasons of 2019–20 and 2020–21. A wide range of variability among genotypes was observed with respect to various phenological and yield traits over the environments. Among the evaluated genotypes, AHCP-1-4-1 and AHCP-2-3 were found photo-thermo insensitive as these were able to flower and set pods at temperatures as low as 10oC and as high as 46°C. Pollen viability studies indicated that AHCP-1-4-1 had 83.72 and 88.24% pollen viability and AHCP-2-3 had 81.58 and 85.71% viable pollen at 11°C and 46°C, respectively and normal pollen tube growth at both the extremes of temperature. The identified genetic resources will contribute for developing photo-thermo insensitive cultivars and will improve the productivity and extend the availability of cowpea with quality pod yield across all seasons and locations of hot arid regions.
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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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