青鲜素(MH)诱导龙眼焦核种子内源激素含量的变化

基金项目:

福建省科技计划重点项目(2005I003)

Effects of maleic hydrazide on endogenous hormone contents in Longan seeds

1.
Putian Institute of Agricultural Sciences, Putian, Fujian 351144, China;
2.
Fujian Academy of Forestry, Fuzhou, Fujian 350012, China;
3.
College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;
4.
Agricultural bureau of putian, Putian, Fujian 351100, China

摘要: 通过对青鲜素(MH)诱导乌龙岭龙眼焦核种子的研究发现,MH处理乌龙岭龙眼后其种子GA3、IAA和ABA含量在整个发育过程中总体呈下降趋势,GA3含量成熟前达到最低;乌龙岭龙眼焦核的形成与激素之间的比值关系密切,种子形成期间,经MH处理龙眼ABA/GA3和ABA/IAA值高于对照,这可能是龙眼果实焦核的主要原因之一。
- 青鲜素 /
- 龙眼 /
- 焦核
Abstract: Maleic hydrazide(MH) was sprayed on a normal longan cultivar (Dimorcarpus longana Lour. cv. Wulongling) to induce the formation of shriveled seeds in longan. The results showed that the contents of gibberellin (GA3),indole-3-acetic acid (IAA) and abscissic acid (ABA) in the shriveled seeds decreased most of the time during fruit development,and the GA3 content reached the minimum at maturation. There was a significant reverse correlation between the formation of the shriveled seeds and the fruit's endogenous hormone content. During seed development,the ratios of ABA/GA3 and ABA/IAA in the seedless fruits were remarkably higher than the control. It was,therefore,concluded that the main reason of the normal longan seeds to become shriveled was due to a reduction of these endogenous hormones.
- maleic hydrazide(MH) /
- longan /
- shriveled-seed

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