高粱种质资源表型性状的遗传多样性分析
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重庆市农业科学院特色作物研究所

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重庆市科委项目(cstc2019jcyj-msxmX0125,cstc2018jxjl80008,cstc2019jscx-msxmX0384);国家科技基础条件平台建设项目(重庆寡日照与高温伏旱区粮油作物野外科学观测研究站)


Genetic Diversity of Sorghum Germplasms Based on Phenotypic Variations
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Institute?of?Characteristic?Crops?Research,?Chongqing?Academy?of Agricultural?Sciences

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Chongqing Science and Technology Commission Project (cstc2019jcyj-msxmX0125, cstc2018jxjl80008, cstc2019jscx-msxmX0384); The National R&D Infrastructure and Facility Development Program of China (Chongqing Low Solar Radiation and High Temperature with Summer Drought Districts Grain and Oil Crops of National Observation and Research Station)

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    摘要:

    对434份不同来源的高粱种质资源进行了表型性状的遗传多样性分析,以期为种质创新和品种改良提供依据。结果表明,供试的高粱种质拥有丰富的遗传多样性,穗型、穗形和叶病的遗传多样性指数H'分别为1.0454、0.9244和1.1718,株高、穗长、千粒重、穗柄长和穗粒重的H'值较高,依次为2.0463、2.0259、2.0093、1.9807和1.9210。株高与穗长、生育期呈极显著正相关,与穗粒重呈极显著负相关。聚类分析将434份高粱种质资源分为3个类群,类群I可作为饲草或能源进行开发,类群II可从中筛选适合作工艺(帚)用的资源,类群III可作为粒用高粱材料创新及杂交育种的种质源。

    Abstract:

    In order to provide reference for germplasm enhancement and variety improvement, the phenotypic diversity of 434 sorghum germplasms with different origins were analyzed. The results showed that sorghum germplasms used in this study presented abundant phenotypic variations at multiple traits. The diversity indices (H') of panicle type, panicle shape and leaf disease were 1.0454, 0.9244 and 1.1718, respectively. The moderate H' at plant height, main panicle length, 1000-grain weight, ear stem length and kernel weight per panicle was found with 2.0463, 2.0259, 2.0093, 1.9807 and 1.9210, respectively. The positive correlation between plant height with main panicle length and growth period was observed, while a negative correlation was detected between plant height and kernel weight per panicle. Cluster analysis suggested three sub-groups from 434 sorghum germplasm accessions, including: Cluster I, which contain elite lines suitable for forage or energy; Cluster II, in which germplasm materials are considerably used for cultivating processing sorghum; Cluster III, in which valuable source for grain sorghum germplasm enhancement and cross breeding are present.

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周瑜,李泽碧,黄娟,等.高粱种质资源表型性状的遗传多样性分析[J].植物遗传资源学报,2021,22(3):654-664.

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  • 收稿日期:2020-09-22
  • 最后修改日期:2020-10-03
  • 录用日期:2020-10-19
  • 在线发布日期: 2021-05-07
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