首页 | 本学科首页   官方微博 | 高级检索  
     


Effects of ethephon,GA3 and nutrient elements on sex expression of Chinese chestnut
Authors:Yang Qiguang  Ren Lizhong  Du Guohua
Affiliation:Anhui Agricultural College, Hefei, Anhui Province People''s Republic of China
Abstract:The effects of ethephon or GA3 on sex expression of Chinese chestnut (Castanea mollissima BL.) were opposite to the effects of these plant growth regulators on cucumber, pumpkin and Chinese white-flowered gourd. Ethephon at 100–500 mg 1?1 inhibited the development of female flowers and promoted that of male flowers. GA3 at 50–500 mg 1?1 caused a significantly lower number of male inflorescences, but increased the number of female flowers. Urea applications decreased the number of male inflorescences and increased the number of female flowers. For plants grown on phosphorous-deficient soils, fertilizing with superphosphate also increased the number of female flowers. Spraying trees with GA3, urea or a mixture of both increased the number of female flowers. Therefore, it is proposed that such applications should be employed at the onset of differentiation of flower primordia of Chinese chestnut to increase the ratio of female to male flowers.
Keywords:ethephon  nutrition  sex expression  GA3  gibberellic acid  PGR  plant growth regulator
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号