{"title":"Diversity studies in Assam rice genotypes for ratooning ability and perennation","authors":"Neha Chakrawarti, Rupam Borgohain, Rajshree Verma","doi":"10.1017/s1479262124000121","DOIUrl":null,"url":null,"abstract":"The objective of the research was to assess diversity among 50 rice genotypes for ratooning and perennation which refers to ability of a plant to regrow from stubble remaining after harvesting. Results showed that 30 genotypes exhibited different degree of ratoon production and ratoon yield. Diversity analysis revealed that all the ratooning genotypes could be assigned to ten clusters. Clusters III (Binadhan-11 and Sayjihari) and VI (IR-64, DRR-44) were the best performing for ratoon yield. Maximum inter-cluster distance was observed between genotypes falling under clusters III and X followed by genotypes under clusters III and II indicating wider genetic diversity between these genotypes. Thus, these genotypes may be useful for future breeding to develop superior varieties with respect to ratooning ability and ratoon yield.","PeriodicalId":20188,"journal":{"name":"Plant Genetic Resources","volume":"96 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Genetic Resources","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1017/s1479262124000121","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The objective of the research was to assess diversity among 50 rice genotypes for ratooning and perennation which refers to ability of a plant to regrow from stubble remaining after harvesting. Results showed that 30 genotypes exhibited different degree of ratoon production and ratoon yield. Diversity analysis revealed that all the ratooning genotypes could be assigned to ten clusters. Clusters III (Binadhan-11 and Sayjihari) and VI (IR-64, DRR-44) were the best performing for ratoon yield. Maximum inter-cluster distance was observed between genotypes falling under clusters III and X followed by genotypes under clusters III and II indicating wider genetic diversity between these genotypes. Thus, these genotypes may be useful for future breeding to develop superior varieties with respect to ratooning ability and ratoon yield.
这项研究的目的是评估 50 个水稻基因型的轮生和多年生多样性，轮生和多年生是指植物从收割后的残茬中重新生长的能力。结果表明，30 个基因型表现出不同程度的轮生和轮生产量。多样性分析表明，所有轮作基因型可归入 10 个群组。第 III 群（Binadhan-11 和 Sayjihari）和第 VI 群（IR-64 和 DRR-44）的大豆产量表现最好。簇间距离最大的是簇 III 和簇 X 下的基因型，其次是簇 III 和簇 II 下的基因型，这表明这些基因型之间具有更广泛的遗传多样性。因此，这些基因型可用于未来的育种，以培育出在大鼠繁殖能力和大鼠产量方面的优良品种。
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