四个 QTL 通过改变柱头大小控制水稻柱头外露率

IF 2.6 3区农林科学 Q1 AGRONOMY

Molecular Breeding Pub Date : 2024-09-09 DOI:10.1007/s11032-024-01499-0

Quanya Tan, Zhenpeng Gan, Liang Xiong, Lin Shao, Weifeng Yang, Xin Luan, Guodong Chen, Fangping Li, Yuerong Ni, Haitao Zhu, Guifu Liu, Suhong Bu, Shaokui Wang, Guiquan Zhang

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引用次数: 0

摘要

柱头外露率（SER）是杂交水稻外交能力的关键性状，直接影响杂交种子生产中杂交种子的产量。在之前的研究中，我们利用水稻的单段替代系定位了 18 个 SER 的 QTLs。在这项研究中，我们发现 18 个 SER QTLs 中有 4 个控制柱头大小（SS）。在 1 号染色体上，控制柱头长度（SL）的 QTL qSL-1 位于 qSER-1b 的同一区间。在 2 号染色体上，两个控制 SS 的 QTL（qSS-2a 和 qSS-2b）在 1288.0 kb 的区域内紧密相连，分别位于 qSER-2a 和 qSER-2b 的相同位置。12 号染色体上控制 SL 的 QTL qSL-12 位于 qSER-12 的相同位置。四个 QTL 对 SS 的加性效应从 0.12 mm 到 0.38 mm 不等，显示出对 SS 的显著影响。在SS的QTLs金字塔品系中，SS随着QTLs的增加而增大。QTL 对 SER 的影响与其对 SS 的影响一致，SL 对 SER 的积极影响大于柱头宽度。我们的研究结果表明，SS是影响水稻SER的重要因素之一。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Four QTLs control stigma exsertion rate by changing stigma size in rice

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Four QTLs control stigma exsertion rate by changing stigma size in rice

The stigma exsertion rate (SER) is a key trait for the outcrossing ability of hybrid rice, which directly affects the yield of hybrid seeds in hybrid seed production. In previous studies, we have located 18 QTLs for SER using single-segment substitution lines in rice. In this study, we found that 4 of 18 QTLs for SER controlled stigma size (SS). On chromosome 1, a QTL qSL-1 controlling stigma length (SL) was located at the same interval of qSER-1b. On chromosome 2, two QTLs for SS, qSS-2a and qSS-2b, linked closely within a 1288.0 kb region, were at the same positions of qSER-2a and qSER-2b, respectively. A QTL qSL-12 controlling SL on chromosome 12 was at the same location of qSER-12. Additive effects of four QTLs for SS ranged from 0.12 mm to 0.38 mm, showing significant effects on SS. In pyramiding lines of QTLs for SS, SS enlarged with the increase of QTLs. The effect of QTLs on SER was consistent with their effect on SS, and SL had a greater positive effect on SER than the stigma width. Our findings demonstrate that SS is one of the important factors affecting SER in rice.

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来源期刊

Molecular Breeding 农林科学-农艺学

CiteScore

5.60

自引率

6.50%

发文量

审稿时长

1.5 months

期刊介绍： Molecular Breeding is an international journal publishing papers on applications of plant molecular biology, i.e., research most likely leading to practical applications. The practical applications might relate to the Developing as well as the industrialised World and have demonstrable benefits for the seed industry, farmers, processing industry, the environment and the consumer. All papers published should contribute to the understanding and progress of modern plant breeding, encompassing the scientific disciplines of molecular biology, biochemistry, genetics, physiology, pathology, plant breeding, and ecology among others. Molecular Breeding welcomes the following categories of papers: full papers, short communications, papers describing novel methods and review papers. All submission will be subject to peer review ensuring the highest possible scientific quality standards. Molecular Breeding core areas: Molecular Breeding will consider manuscripts describing contemporary methods of molecular genetics and genomic analysis, structural and functional genomics in crops, proteomics and metabolic profiling, abiotic stress and field evaluation of transgenic crops containing particular traits. Manuscripts on marker assisted breeding are also of major interest, in particular novel approaches and new results of marker assisted breeding, QTL cloning, integration of conventional and marker assisted breeding, and QTL studies in crop plants.