作　　者： ; ; ; (罗诗）; (尹金华）;

机构地区： 广州大学生物与化学工程学院

出　　处： 《华南农业大学学报》 2003年第3期16-19,共4页

摘　　要： 以'糯米糍'荔枝(LitchichinensisSonn.cv.Nuomici)为试材,研究了开花前2d喷施30mg·L-1腐胺(Put)1次对子房的抗氧化酶活性和柱头容受性的影响.结果表明:在雌花开放前2d喷施Put后,不同授粉时期的处理均不同程度地提高了子房中超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)的活性;在雌花开放的第4d授粉,处理的坐果率为3 64%,而对照则不能坐果.据此认为喷施Put提高坐果的重要原因之一可能与Put提高了抗氧化酶活性,从而延缓了雌蕊衰老和延长了柱头容受花粉能力有关. Effects of pre-bloom spray of putrescine on the antioxidant enzymes activities in the ovaries and the stigma receptivity in litchi (Litchi chinensis Sonn. cv. Nuomici) were studied. The results showed that a single putrescine spray at 30 mg·L-1 2 days before female bloom increased the activities of SOD、POD and CAT in the ovaries and extended the stigma receptivity by 2-3 days. And the fruit set percentage of treatment with application of putrescine was 364% and that of the control was zero when pollination was done on the fourth day after female bloom. It is suggested that fruit set increased by pre-bloom putrescine spray in litchi is associated with the increase of antioxidant enzymes activities in the ovaries and the extended the stigma receptivity.

关 键 词： 外源腐胺 荔枝 子房 抗氧化酶活性 柱头容受性 坐果率

领　　域： [农业科学] [农业科学]