小麦茎杆相关性状的配合力及其与抗倒伏杂种优势形成的关系研究

doi:10.1016/S2095-3119(20)63408-6

Journal of Integrative Agriculture ›› 2022, Vol. 21 ›› Issue (1): 26-35.DOI: 10.1016/S2095-3119(20)63408-6

所属专题：麦类遗传育种合辑Triticeae Crops Genetics · Breeding · Germplasm Resources；麦类耕作栽培合辑Triticeae Crops Physiology · Biochemistry · Cultivation · Tillage

小麦茎杆相关性状的配合力及其与抗倒伏杂种优势形成的关系研究

收稿日期:2020-04-22 接受日期:2020-08-25 出版日期:2022-01-01 发布日期:2022-01-01

Analysis of combining ability for stem-related traits and its correlations with lodging resistance heterosis in hybrid wheat

YANG Wei-bing^{1, 2}, QIN Zhi-lie¹, SUN Hui¹, HOU Qi-ling¹, GAO Jian-gang¹, CHEN Xian-chao¹, ZHANG Li-ping^{1, 2}, WANG Yong-bo¹, ZHAO Chang-ping^{1, 2}, ZHANG Feng-ting^{1, 2}

¹ Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, P.R.China
² The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing 100097, P.R.China

Received:2020-04-22 Accepted:2020-08-25 Online:2022-01-01 Published:2022-01-01
About author:YANG Wei-bing, E-mail: shennong04@126.com; Correspondence ZHAO Chang-ping, Tel: +86-10-51503918, E-mail: cp_zhao@vip.sohu.com; ZHANG Feng-ting, Tel: +86-10-51503104, E-mail: lyezh@163.com
Supported by:
This work was supported by the National Key R&D Program of China (2016YFD0101601), the Beijing Natural Science Foundation, China (6194035) and the Training Programme Foundation for the Beijing Municipal Excellent Talents, China (2017000020060G130).

摘要/Abstract

摘要：

随着杂交小麦的应用面积逐渐增加，倒伏正在成为其获得高产的主要限制因素之一。然而，关于茎秆相关性状的配合力及其与抗倒伏杂种优势形成的研究较少。本研究，按照不完全双列杂交设计（NCII），以茎秆相关性状显著差异的3个不育系（母本）和8个恢复系（父本）为试验材料，配置24个杂交组合。对基部第二节间长度、基部第二节间抗折力等茎秆相关的8个性状开展主成分分析（PCA）、配合力分析及杂种优势分析。PCA结果表明，8个变量可被提取为两个主要因子，分别为正相关因子（因子1）和负相关因子（因子2），分别解释总变异的52.3％和33.2％。PCA和指标权重分析表明，因子1相关性状在抗倒伏优势形成中起主要作用，研究还表明，茎秆相关性状的遗传以加性效应为主。以恢复系R1，R4，R6及R7与不育系M3配置组合可获得具有较高抗倒伏能力的杂交组合，与其因子2相关性状具有较低的一般配合力效应（GCA），及因子1相关性状具有较高的GCA密切相关。杂种优势分析表明，因子1相关性状（除基部第二节间壁厚外）的GCA或特殊配合力效应（SCA）与抗倒伏杂种优势呈正相关关系。一般而言，抗倒伏杂种优势与不育系因子1相关性状GCA的相关系数显著高于其与恢复系的，此外，不育系因子1相关性状具有更高的方差值，表明，在配置杂交组合时应特别关注不育系因子1相关性状的选择。遗传分析表明，基部第二节间直径和重心高度的狭义遗传力明显低于其他性状（<60％），表明，在亲本选育时这两个性状适合在高世代进行选择。这些发现可为亲本选育和抗倒伏杂种优势的利用提供理论依据。

Abstract: With the application of hybrid wheat, lodging is becoming one of the major factors limiting high yield in its production. However, few studies have focused on combining ability and heterosis analysis of stem-related traits. In this study, 24 crosses were made according to NCII genetic design, using the three (photo-sensitive male sterile lines)×eight (restorer lines) incomplete diallel crosses. The length of basal second internode (LBSI) and breaking strength of basal second internode (BSBSI) as well as other stem-related traits were used to perform the principal component analysis (PCA), combining ability and heterosis analysis. The PCA results showed that the variables could be classified into two main factors, which were named as the positive factor (factor 1) and the negative factor (factor 2), and accounted for 52.3 and 33.2%, respectively, of the total variance in different variables, combined with the analysis for index weight indicated that the factor 1-related traits play positive roles in lodging resistance formation of hybrids. Combining ability variance analysis indicated that its genetic performance was mainly dominated by additive gene effects, and the hybrid combinations with higher lodging resistance can be selected by using of 14GF6085 (R1), 14GF6343-2 (R4), 14GF6937 (R6), 14GF7433-1 (R7), and BS1086 (M3), which are with the features with lower general combining ability (GCA) effects of factor 2-related traits whereas higher GCA effects of factor 1-related traits. The heterosis analysis showed that the wide range of heterosis varied with the traits and combinations, and GCA or specific combining ability (SCA) effects of factor 1-related traits except wall thickness of basal second internode (WTBSI) were positively and closely related to the heterosis of lodging resistance. Generally, the correlation coefficients of heterosis to GCA effects of sterile lines (GCA_m) of factor 1-related traits are significantly higher than that to GCA of restorer lines (GCA_r) and SCA, combined with the higher GCA_m variance values of factor 1-related traits compared to GCA_r, the GCA_m of factor 1-related traits should be particularly considered when breeding hybrid combinations. The heritability analysis showed that the narrow-sense heritability of the diameter of basal second internode (DBSI) and the center of gravity height (TCGH) were obviously lower (<60%) than other traits, suggesting that these two traits were suitable for selection in higher generation for parental breeding. These could provide a theoretical basis for parental breeding and heterosis utilization of lodging resistance.

Key words: lodging resistance , stem-related traits , general combining ability , specific combining ability , heterosis

. 小麦茎杆相关性状的配合力及其与抗倒伏杂种优势形成的关系研究[J]. Journal of Integrative Agriculture, 2022, 21(1): 26-35.

YANG Wei-bing, QIN Zhi-lie, SUN Hui, HOU Qi-ling, GAO Jian-gang, CHEN Xian-chao, ZHANG Li-ping, WANG Yong-bo, ZHAO Chang-ping, ZHANG Feng-ting. Analysis of combining ability for stem-related traits and its correlations with lodging resistance heterosis in hybrid wheat[J]. Journal of Integrative Agriculture, 2022, 21(1): 26-35.

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小麦茎杆相关性状的配合力及其与抗倒伏杂种优势形成的关系研究

Analysis of combining ability for stem-related traits and its correlations with lodging resistance heterosis in hybrid wheat

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