Flowering Biological Characteristics of Four Variant Types of Camellia magniflora Chang
In order to promote the development of cross breeding and species conservation of Camellia magniflora Chang,by using four variant types of it as materials,a study of blooming phenophase,flower charac?teristics,pollen viability,pollen-ovule ratio and out-crossing index was conducted.The results showed:(1) The blooming phenophase of the four variant types of Camellia magniflora Chang was inconsistent. Type one blossomed the earliest.Type two had the longest flowering period of 73 days.Type three had the shortest flower?ing period of only 48 days.Type four blossomed the latest.(2) The corolla of type one,whose petals were light pink,was the largest and its stamen number was as many as 182.The petal color of type two,type three and type four gradually deepened and their stamen number was similar but less than that of type one. The styles numbers of the four types were all three and their petal numbers were between five to seven.(3) The germination rate of the fresh pollen of the four types could reach more than 46% in the medium of 10% sucrose and 1%agar and the pollen viability was high and the male gametes were fertile.(4) The research of pollen-ovule ratio and out-crossing index in the breeding system of the four types showned that they were xenogamy plants,nee?ding pollinators.Stamen degeneration existed in the variant types of Camellia magniflora Chang.
Camellia magniflora Changvariationflowering biologybreeding system
国家科技期刊平台
NSTL
万方数据
维普
