甘蓝型油菜抗倒性及其与株型结构的关系研究

以9个抗倒性不同的高产甘蓝型油菜组合为材料，在2个生态环境差异较大的试点进行种植，分析了株型结构与倒伏指数之间的关系，结果表明：根茎粗和一次分枝数与倒伏指数呈极显著和显著负相关，一次分枝长与倒伏指数呈显著正相关，可将根茎粗、一次分枝数和一次分枝长作为油菜抗倒伏性状的主要指标；（分枝层＋主花序）（即结角层）／分枝高度（非结角层）、分枝层／分枝高度、主花序／分枝高度与倒伏指数呈极显著或显著正相关，鲜根冠比和结角层／非结角层越大，植株的倒伏指数越大，越不抗倒，即合理的株型结构可增强植株的抗倒性；各产量性状均与倒伏指数呈显著或极显著负相关，说明植株倒伏越严重产量越低。主花序产量比例小，侧枝产量比例大，...

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Bibliographic Details
Published in江西农业学报 Vol. 28; no. 9; pp. 9 - 13
Main Author 王学芳 郑磊 张智 张耀文 田建华
Format Journal Article
LanguageChinese
Published 陕西省杂交油菜研究中心/国家油料作物改良中心 陕西油菜分中心,陕西 杨凌,712100 2016
Subjects
倒伏指数
株型
甘蓝型油菜
相关分析
Plant architecture
甘蓝型油菜
相关分析
Correlation analysis
Lodging index
Brassica napus
倒伏指数
株型
Online AccessGet full text
ISSN1001-8581
DOI10.19386/jc.nki.jxnyxb.2016.09.03

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Summary:以9个抗倒性不同的高产甘蓝型油菜组合为材料，在2个生态环境差异较大的试点进行种植，分析了株型结构与倒伏指数之间的关系，结果表明：根茎粗和一次分枝数与倒伏指数呈极显著和显著负相关，一次分枝长与倒伏指数呈显著正相关，可将根茎粗、一次分枝数和一次分枝长作为油菜抗倒伏性状的主要指标；（分枝层＋主花序）（即结角层）／分枝高度（非结角层）、分枝层／分枝高度、主花序／分枝高度与倒伏指数呈极显著或显著正相关，鲜根冠比和结角层／非结角层越大，植株的倒伏指数越大，越不抗倒，即合理的株型结构可增强植株的抗倒性；各产量性状均与倒伏指数呈显著或极显著负相关，说明植株倒伏越严重产量越低。主花序产量比例小，侧枝产量比例大，植株的抗倒性越强。
Bibliography:36-1124/S
WANG Xue-fang, ZHENG Lei, ZHANG Zhi, ZHANG Yao-wen, TIAN Jian-hua （ Hybrid Rapeseed Research Center of Shaanxi Province ! Shaanxi Rapeseed Branch, National Oil Crops Genetic Improvement Center, Yangling 712100, Chin
Brassica napus; Lodging index; Plant architecture; Correlation analysis
The relationships between lodging resistance and plant architecture of 9 high-yielding hybrid rapeseed combinations with different lodging resistances were studied in two different ecological environments. The main results were obtained as follows ： （ 1 ） Thickness of rhizome （TR） and number of primary branches （NPB） were significantly or very significantly negatively correlated with lodging index （ LI）, and length of primary branch （LPB） was significantly positively correlated with LI, so TR, NPB and LPB could be used as the main parameters to evaluate the lodging resistance of rapeseed; （2） LI had a highly significant or significant positive correlation with [ length of branch-layer stem （LBLS） ＋ length of main inflor
ISSN:1001-8581
DOI:10.19386/jc.nki.jxnyxb.2016.09.03