摘要
对20个玫瑰品种的切花产量及13个数量性状进行了遗传相关、相关遗传力及通径分析等。结果表明:(1)单株花蕾数、分枝数、第1个花瓣的长、第2个花瓣的长、花蕾长与单株花蕾产量的遗传相关显著;(2)单株花蕾数、第2个花瓣的长、分枝数和花蕾长的相关遗传力与单株花蕾产量的遗传力接近,相关选择效率接近对单株花蕾产量的直接选择效率;(3)根据决策系数,花蕾长、单株花蕾数、第2个花瓣的长、分枝数、单蕾花瓣鲜重对单株产量有促进作用。
The floral bud yield/plant （y） and 13 quantitative traits of 20 Rosa rugosa cuhivars were investigated. Analysis of genetic correlation, correlative heritability （hxy） and path analysis were carried out. The results indicated ： （ 1 ） the number of floral bud/plant （ x8 ）, the number of branches （ x13 ）, the length of the first petal （x3 ）, the length of the second petal （x5 ）, the length of floral bud （x1 ） had significant genetic correlation with y; （2） hxy of x8, x5, x13 and x1 related to y were higher, respectively, and were close to heritability （ h^2 ） of y. The efficiency of correlation selection of these traits would not be much lower than direct selection of y; （3） x1, x8, x5, x13, the fresh mass of pedals/floral bud （ x9 ） played an important positive role in improving y according to decision coefficient.
出处
《园艺学报》
CAS
CSCD
北大核心
2007年第4期955-958,共4页
Acta Horticulturae Sinica
基金
山东省良种产业化资助项目[鲁科农字(2002)228号]
关键词
玫瑰
遗传相关
相关遗传力
通径分析
决策系数
Rosa rugosa
Genetic correlation
Correlative heritability
Path analysis
Decision coefficient
