饲用珍珠粟三系杂交种的结合能力和异质性研究

IF 0.8 4区农林科学 Q3 AGRONOMY

Range Management and Agroforestry Pub Date : 2023-12-20 DOI:10.59515/rma.2023.v44.i2.06

Ruchika Bhardwaj, Sarabjeet Singh, Rabinder Singh Sohu, Harpreet K. Oberoi

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引用次数: 0

摘要

在本研究中，2016 年，两个 A CMS 品系 ICMA 03333 和 ICMA 01777 与 15 个不同的 5 即具有高生物量的保持系杂交。2017 年，30 个雄性不育 F 与两个高 Kharif1 生物量授粉株 Giant Bajra 和 RBC-2 杂交，产生三向杂交种。2018年期间，在夏季（环境I）和（环境II）对共计60个三系杂交种的农艺性状、株高（厘米）、青饲料产量（公斤/地块）和干饲料产量（公斤/地块）以及品质性状、干物质（%）、干物质消化率（%）和粗蛋白（%）进行了评价。在两种环境下，亲本和杂交种的大多数性状都存在显著的体外变异。环境方差集合分析表明，组合能力随环境变化而变化。在两种环境下，ICMA 01777 × PB 111B 株系和 Giant Bajra 试验株系被确定为青饲料产量及其组成性状和品质性状的良好组合。三系杂交种 (ICMA01777 × PB220B) × GB、(ICMA01777 × ICMB97111) × GB、(ICMA01777 × PB111B) × GB 和 (ICMA01777 × ICMB00444) × GB 被认为是研究中几乎所有性状都有希望的杂交组合。高 SCA 杂交组合也表现出较高的异交效应。在产量性状的遗传中，加性基因作用占主导地位，而在饲料品质性状的遗传中，非加性基因作用占主导地位

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Studies on combining ability and heterosis in three-way hybrids in forage pearl millet

In the present study, two A CMS lines, ICMA 03333 and ICMA 01777 were crossed with 15 different 5 viz.maintainers having high biomass during 2016. The thirty male sterile F s were crossed with two highkharif1biomass pollinators, Giant Bajra and RBC-2 during 2017 to generate three-way hybrids. A total of viz.Kharifsixty, three-way hybrids were evaluated in summer (Environment I) and (Environment II) for agronomic kharif traits, plant height (cm), green fodder yield (kg/plot) and dry fodder yield (kg/plot) and quality traits, dry viz.viz.matter (%), dry matter digestibility (%) and crude protein (%) during 2018. Significant variability In vitrokharifwas present in parents and hybrids for a majority of the traits under both environments. The pooled analysis of variance over environments revealed that combining ability varies with the change in environments. The lines ICMA 01777 × PB 111B and the tester Giant Bajra were identified as good general combiners for green fodder yield and its component characters as well as for quality traits, under both environments. The three-way hybrids, (ICMA01777 × PB220B) × GB, (ICMA01777 × ICMB97111) × GB, (ICMA01777 × PB111B) × GB, viz. and (ICMA01777 × ICMB00444) × GB were found to be promising cross combinations for almost all the traits under study. The high SCA cross combinations also showed high heterotic effects. Additive gene action was predominant in the inheritance of yield traits, whereas for fodder quality traits non-additive gene action was predominant

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来源期刊

Range Management and Agroforestry AGRONOMY-

CiteScore

1.50

自引率

62.50%

发文量

审稿时长

>12 weeks

期刊介绍： The Society has been established with the following objectives: 1. To advance the cause of research activity in all aspects of rangelands and to encourage and promote the studies on rangeland, wasteland ecosystems and agroforestry. 2. To provide facilities for seminars and conferences to rangeland researchers, development workers and farmers and to encourage close cooperation with organizations having related aims and interests. 3. To disseminate the knowledge of scientific agriculture and technology for forage and rangeland production, improvement and management.