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亚洲棉光籽种质资源的遗传学分析
王晓阳1, 孙亚莉1,4, 程华1,3, 潘兆娥1, 何守朴1, 龚文芳1,2, 杜雄明1
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(1中国农业科学院棉花研究所/棉花生物学国家重点试验室, 河南安阳 455000;2 中南林业科技大学,经济林培育与保护教育部重点试验室,经济林育 种与栽培国家林业局重点试验室,湖南长沙 410004;3 安阳工学院,生物与食品工程学院,河南安阳 455000;4 山西农业大学信息学院,山西太谷 030800)
摘要:
本研究利用 55 份亚洲棉(Gossypium arboreum)短绒突变体材料作为母本与同一父本材料 ‘石系亚 1 号’ 分别进 行杂交,获得 55 个 F1群体,并进行光籽性状显隐性遗传分析,然后选择其中 15 个 F1 进行自交,获得相应 F2 群体进一步分 析光籽性状的分离规律。本研究得出的结论如下:(1)光籽性状的遗传机制非常复杂,37.5%的光籽材料呈显性遗传,62.5% 的光籽材料为隐性遗传;‘GA0149’ 和 ‘横峰铁籽’ 材料光籽性状受显性单基因控制,‘常紫 1 号’ 光籽性状受隐性单基因控制, 大部分材料的光籽性状均由两对基因控制,并且存在基因互作和显性上位作用,其中 8 个材料控制光籽性状的基因具有显性 抑制作用,4 个材料控制光籽性状的基因具有互补效应;(2)数量性状间的相关性分析表明光籽性状与叶茸毛呈显著负相关, 与衣分没有相关性,在一些杂交组合中光籽性状与叶面积呈正相关,与棉酚数呈负相关;(3)对亚洲棉群体表型性状遗传多 样性分析表明:亚洲棉不同群体间花的颜色、叶片形状、花基斑的有无和茎的颜色性状上差异显著,遗传多样性较好。
关键词:  亚洲棉  短绒突变体  遗传学分析  显隐性  相关性分析
DOI:10.13430/j.cnki.jpgr.20191016001
投稿时间:2019-10-16修订日期:2019-12-03
基金项目:国家自然科学基金(31601353); 国家重点研发计划(2017YFD0101601-03); 河南省科技厅基础与前沿项目(162300410171)
Genetic Analysis of Fuzziness Trait in Gossypium arboreum Germplasm
WANG Xiao-yang1, SUN Ya-li1,4, CHENG Hua1,3, PAN Zhao-e1, HE Shou-pu1, GONG Wen-fang1,2, DU Xiong-ming1
(1Institute of Cotton Research, Chinese Academy of Agricultural Sciences / State Key Laboratory of Cotton Biology, Anyang 455000; 2Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education/Central South University of Forestry and Technology, Ministry of Education, Changsha 410004; 3 College of Biology and Food Engineering, Anyang Institute of Technology, Anyang 455000; 4College of Information, Shanxi Agricultural University, Taigu 030800)
Abstract:
Fifty five F1 populations were obtained by crossing 55 fuzzless mutant accessions of Gossypium arboreum (female parents) with G. arboreum ‘Shixiya 1 Hao’ (male parent) for analysis of the dominant and recessive inheritance of fuzziness trait in cotton. Segregation populations (F2) were obtained by selfing 15 selected F1 populations for further analysis of fuzziness trait inheritance pattern. The results showed that the genetic mechanism of fuzziness trait inheritance was complex, with 37.5% of dominant inheritance and 62.5% of recessive inheritance. The fuzziness trait was controlled by a single dominant gene in ‘GA0149’ and ‘Hengfeng Tiezi’, while a single recessive gene was responsible for the mutation in ‘Changzi 1 Hao’. However, in most of the accessions, the fuzziness trait was controlled by two pairs of genes with dominant and epistatic effects. Particularly, 8 accessions carried two dominant epistatic inhibition gene and 4 accessions had a pair of genes with complementary effects responsible for fuzziness trait. The correlation analysis showed that the fuzziness trait was positively correlated with leaf hair but had no relationship observed with lint percentage. In some cross combinations, it was positively correlated with the leaf area but negatively with the gossypol number. The phenotypic traits in Asian cotton populations showed significant genetic diversity. The flower color, leaf shape, presence or absence of petal base spot and the color of stem were significantly different among different accessions.
Key words:  Gossypium arboreum  fuzz mutant  genetics analysis  dominance and recessiveness  correlation analysis

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