Intraspecific genetic variation among

Author:

Roy Ajoy Kumar,Malaviya Devendra RamORCID,Kaushal Pankaj,Mahanta Sanat Kumar,Tewari Rupali,Chauhan Roopali,Chandra Amaresh

Abstract

Context The genus Sehima is an important component of grasslands worldwide and is the dominant grass of Sehima–Dichanthium grasslands of India. It is an excellent fodder and a good source of lignocellulosic material and several industrially important biomolecules. Aims We aimed to characterise and conserve locally adapted diverse germplasm of S. nervosum, collected from different agro-climatic zones, for effective utilisation. Methods Morphological and nutritive traits were measured and statistically analysed for diversity in a germplasm collection of S. nervosum genotypes from diverse agro-climatic conditions of India, and a representative core subset was created. Key results Morphological traits and nutritive parameters such as crude protein content and digestibility showed wide variability among accessions. Principal component analysis established that plant height, number of tillers per tussock and number of nodes per tiller accounted for half of the variation present. Tiller internode length, stem diameter, and leaf blade length and width also contributed >5 unit points each to the cumulative proportion of variance accounted for. Conclusions The set of germplasm, possessing substantial variability, is a valuable genetic resource for developing new cultivars. Genotypes identified with high protein content could be used as forage, and those with high cellulose and hemicelluloses as a biofuel resource. Implications Genotypes can be separately identified for forage and biofuel, and the core subset can effectively be used for evaluation and selection of genotypes in target environments. Additionally, the core subset can be used to establish and rejuvenate sustainable pastures by allowing natural selection.

Publisher

CSIRO Publishing

Subject

Plant Science,Agronomy and Crop Science

Reference65 articles.

1. The stabilizing effect of intraspecific genetic variation on population dynamics in novel and ancestral habitats.;The American Naturalist,2009

2. Ahmad L, Habib Kanth R, Parvaze S, Sheraz Mahdi S (2017) Agro-climatic and agro-ecological zones of India. In ‘Experimental agrometeorology: a practical manual’. 1st edn. (Eds L Ahmad, R Habib Kanth, S Parvaze, S Sheraz Mahdi) pp. 99–118. (Springer International Publishing: Cham, Switzerland) doi:

3. Anonymous (2018) ‘Agricultural research data book 2018.’ (ICAR - Indian Agricultural Statistics Research Institute: New Delhi, India) Available at

4. AOAC (1980) ‘Official methods of analysis.’ 13th edn. (Association of Official Analytical Chemists: Washington, DC, USA)

5. Diversity in Indian sesame collection and stratification of germplasm accessions in different diversity groups.;Genetic Resources and Crop Evolution,1998

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3