摘要
通过分析国家油菜品种区域试验长江中游组(2014-2015年度4组区试,每组包含对照在内共12个参试品种)的数据,探讨农艺性状稳定性对油菜丰产性和稳产性的影响。利用AMMI(加性主效应与复合交互效应)模型计算产量及农艺性状的敏感度来衡量各性状的稳定程度。在每个试验组内,根据品种的丰产性、稳产性和总体农艺性状稳定性对品种进行归类。通过回归分析和灰色关联分析,探讨农艺性状与产量两者敏感度之间的密切程度。利用Pearson相关分析,探讨农艺性状与产量性状两者敏感度之间的线性关系,及农艺性状敏感度之间的线性关系。结果表明,高、中产类型品种的产量和农艺性状敏感度中等或较低;低产类型品种农艺性状敏感度中等或较高,产量敏感度没有明显倾向。农艺性状与产量两者的敏感度之间存在显著的线性回归关系,农艺性状敏感度的联合线性作用能解释约70%的产量敏感度变异原因。一次分枝高度和一次分枝相对高度(一次分枝高度与株高的比值)、一次分枝数与单株角果数的敏感度之间有极显著的线性相关关系。千粒重、一次分枝数、主花序角果密度、分枝相对高度、每角粒数、生育期和菌核病病指敏感度与产量稳定性有较为密切关系。
To understand the stability of agronomic traits and their relations to yield stability and adaptability,genotype × environment interaction was analyzed by using candidate canola varieties tested in regions along Midway of the Yangtze River in China during 2014- 2015. Varieties in 4 test groups（ 12 in each group） were planted in randomized complete blocks in 3 replications at 10 sites. Genotype × environment interaction（ G × E） was analyzed by using AMMI（ additive main effects and multiplicative interaction） and regression models. AMMI analysis of variance showed highly significant genotype and environment mean squares,suggesting that canola yield of genotypes were under the major environmental effects of G × E. Results revealed that the yield and agronomic traits of high-yield type and medium- yield type were more stable. Low- yield type had moderate stable or unstable agronomic traits,and was not stable in yield. Stability of agronomic traits and yield were significantly correlated. The joint linear stability effect of agronomic traits could explain - 70% of yield stability. Significant correlations were found between stabilities of primary branch height and relative height of primary branch（ the ratio of branch height to plant height）,and also between stabilities of primary branch number and silique number per plant. Close relationship was found between the stabilities of yield and of 1 000- seed weight,primary branch number,silique density on the main inflorescence,relative branch height,seed per silique,growth duration and Sclerotinia disease index.
出处
《中国油料作物学报》
CAS
CSCD
北大核心
2016年第4期423-430,共8页
Chinese Journal of Oil Crop Sciences
基金
重庆市科技攻关计划项目(cstc2012gg B80008)
