摘要
通过相关和通径分析,对宁夏种植和自育的60个杂交种(组合)的9个主要性状与单株产量间的关系进行研究。结果表明,各数量性状的变异范围均较大;穗粗、百粒质量、穗长、穗行数和穗位高与单株产量的相关系数达到显著水平;通过通径分析得出,单株产量与其相关性状的直接效应由大到小依次为百粒质量>行粒数>穗行数>穗粗>穗长>穗位高>株高>茎粗>秃尖长,确定百粒质量是影响宁夏玉米单株产量的主要因素,其次是行粒数和穗行数。宁夏高产稳产玉米品种应注重选择百粒质量高、行粒数多和穗行数多的品种,同时要求适宜的株高、穗位高和茎粗。
The relationship between individual yield and nine main quantitative traits were studied on sixty maize（Zea mays L.） hybrids or combinations by correlation and path analysis in Ningxia.The results showed that all main quantitative traits had wide variations;ear diameter,100 grain mass,ear length,row number per ear and ear height were positively and significantly related with individual yield;The results of path analysis indicated that the values of direct path coefficient between individual yield and main quantitative traits were ranked as follows：100 grain massgrains per rowrow number per earear diameterear lengthear heightplant heightstalk diameterbarren tip length,and that the first factor for individual yield of maize in Ningxia was influenced by 100 grain mass,next by grains per row and row number per ear.Breeding high and steady yield varieties in Ningxia should pay more attention to breed high 100 grain mass,high grains per row,high row number per ear,favorable plant height,suitable ear height and stalk diameter.
出处
《西北农业学报》
CAS
CSCD
北大核心
2012年第2期48-53,共6页
Acta Agriculturae Boreali-occidentalis Sinica
基金
宁夏回族自治区重大科技攻关与示范项目和研企协作项目
宁夏回族自治区自然科学基金项目(NZ0637)
"十二五"农村科技领域国家科技支撑计划(2011BAD35B01)
关键词
玉米
数量性状
单株产量
相关及通径分析
Maize
Quantitative traits
Individual yield
Correlation and path analysis
