浙江农林大学学报2012，Vol.29Issue(3)：388-393,6.
罗甸麻疯树开花习性及花的时空分布特点
Flowering behavior and spatial-temporal distribution characteristics of Jatropha curcas in Luodian
摘要
Abstract
To have a grasp of the overall situation of flowering characteristics of Jatropha curcas, which would provide basis for the further flower control experiment and produce higher yield of Jatropha curcas, continuous observation and statistical analysis on flowering behavior and spatial-temporal distribution characteristics of Jatropha curcas were carried out in Luodian. The results indicated that; Jatropha curcas can form flower bud many times in one year. It shoots out twigs more than once on which flower buds begin to take shape. At Luodian, Jatropha curcas is in bloom from May to September, during which there are two high tides of blossom generally and are characterized by vegetative stage and ripening stage. Vegetative Buds Germination is a main sign of Jatropha curcas entering critical period of bud physiological differentiation stage. Dichasial inflorescence grows on top of new branches. There was no significant difference in amount of inflorescence, leaf beneath the inflorescence, small flower of a inflorescence and female flower in a inflorescence in all directions: north, south, east and west, and in the upper, middle, lower of the tree. It takes about 40-50 days from inflorescences emerge to the entire small flowers blossom. A small flower is flowering for 2-5 days. One inflorescence has an average of 134 small flowers which contain 4 female flowers. Female-male ratio is 1 o 33. There was great significant correlation between the distribution of female and the location of inflorescence branch. 69% females grow on the terminal of different level branchs in inflorescence, including 48% female growing on the first bifurcation of the primary rachis branch and the terminal of inflorescence. At different bifurcation in an inflorescence, the number of fruit increased with that of the female flowers, as against the percentage of set fruit decreased. [Ch, 3 fig. 3 tab. 15 ref.]关键词
植物学/麻疯树/开花习性/雌花分布/花序结构/结实率/贵州罗甸Key words
botany/ Jatropha curcas/ flowering behavior/ female space distribution/ structure of inflorescence / percentage of set fruit/ Luodian County of Guizhou Province分类
农业科技引用本文复制引用
王秀荣,丁贵杰,刘烈志,李平..罗甸麻疯树开花习性及花的时空分布特点[J].浙江农林大学学报,2012,29(3):388-393,6.基金项目
贵州省重大专项(黔科合重大专项字(2007)6004-5) （黔科合重大专项字(2007）
教育部博士点基金资助项目(20070657001) （20070657001）
贵州省自然科学基金资助项目(黔科合J字[2010]2048号) （黔科合J字[2010]2048号）
贵州省人才基地建设项目(黔人领发[2009]9号) （黔人领发[2009]9号）
贵州省创新团队项目(黔科合人才团队2011) （黔科合人才团队2011）
