期刊论文

中文

热带作物学报

1000-2561

2022

43

6

1122-1128

10.3969/j.issn.1000-2561.2022.06.004

No.2017YFD0301501:国家重点研发计划 No.ZDKJ2021002:海南省重大科技计划项目 No.ZDKJ2020001:海南省重大科技计划项目

本校为第一机构

倒伏是影响水稻(Oryza sativa L.)生产的重要因素,半矮杆是协调高产和抗倒性的理想资源.前期通过辐射诱变'湘辐糯1号'获得了半矮杆突变体'双辐矮糯'.本研究分析了'双辐矮糯'的茎节配置特点、基本农艺性状及其遗传规律.结果表明:'双辐矮糯'株高较'湘辐糯1号'(133.13 cm)降低了24.88 cm,穗、第1节和第2节长度显著缩短,降幅分别达到18.10％、23.06％和19.13％,而第3、4、5节长度缩短程度不明显,表明其株高突变基因主要控制穗和高位茎节的伸长.'双辐矮糯'的单株有效穗为10.4个,是'湘辐糯1号'(5.2个)的2.04倍,其强分蘖能力确保了在每穗总粒数下降20.24％和千粒重下降7.51％情况下单株产量仍表现出25....

Lodging is an important factor affecting the production of rice(Oryza sativa L.).The semi-dwarf materials are ideal germplasms to coordinate the contradiction between yield and lodging resistance.Previously,a semi-dwarf mutant named‘Shuang-Fu-Ai-Nuo’was obtained in‘Xiang-Fu-Nuo No.1’induced by radiation mutagenesis.Here,this work aims to reveal its characters on stem node configuration,basic agronomic traits and genetic law.It showed that‘ShuangFu-Ai-Nuo’was 24.88 cm lower than‘Xiang-Fu-Nuo No.1’with a plant height of 133.11 cm.In parti...