Screening and Application of Oilseed Rape Varieties with High Yield and High Harvest Index  

高产高收获指数油菜品种的筛选与应用（英文）

作　　者：LI Mei QU Liang DENG Li-chao GUO Yi-ming 李莓;曲亮;邓力超;郭一鸣(湖南省作物研究所,湖南长沙410125)

机构地区：Hunan Crop Research Institute,Changsha 410125,PRC

出　　处：《Agricultural Science & Technology》2018年第1期46-50,共5页农业科学与技术（英文版）

基　　金：中南地区强优势油菜杂交种的创制与应用(2016YDF0101301)~~

摘　　要：28 oilseed rape Pol CMS three-line hybrid combinations diallel-crossed were compared in the yield and harvest index and analyzed on the correlation between the experimental yields and harvest indexes in this study. The correlation coeffcient was only 0.365 4, lower than a signifcant level, which indicated that there was no signifcant positive （or negative） correlation between the economic yields and the harvest indexes in oilseed rape. Among them, 8 hybrid combinations including 7 with a harvest index〉0.30 and one with a harvest index〈0.27 increased signifcantly in the yields compared with the control, and then were screened for production experiment. Under different cultivation methods, all the 8 combinations had a stable harvest index, and the combinations with higher harvest indexes also had a stable performance in yields. An oilseed rape variety Fengyou 737 with higher yield and harvest index selected through a further screening was grown with the harvest indexhigher than 0.33 whether transplanted or directly seeded in Yangtze River Basin Demonstration Area, demonstrating stable high yields as well as good ecological adaptability. The combination of yield and harvest index in the study is conducive to breeding a new oilseed rape variety with stable yields and good tolerance to close planting.以产量和收获指数为主要参数对28个双列杂交培育的油菜POL三系杂交组合进行了比较,将试验产量和收获指数进行相关性分析,相关系数仅为0.365 4,未达到显著水平,表明油菜的经济产量与收获指数没有显著的正向(或反向)相关关系。筛选了其中8个产量比对照极显著增产的杂交组合(其中,7个收获指数>0.30,1个收获指数<0.27)进行生产试验,在不同栽培方式下,8个组合的收获指数表现稳定,且收获指数高的组合产量表现也明显稳定。进一步筛选出一个高产高收获指数的油菜品种——沣油737,在长江流域示范区适应移栽或直播等不同种植方式,收获指数均在0.33以上,高产稳产性好表现了良好的生态适应性。研究认为:产量与收获指数结合,有利于选育稳产耐密植的油菜新品种。

关 键 词：Oilseed rape HYBRIDIZATION Harvest index YIELD Variety screening 

分 类 号：S565.4[农业科学—作物学]