‘妃子笑’荔枝不同花期果实大小与激素含量的关系

 对‘妃子笑’荔枝同一穗上的早花果和晚花果的对比研究发现, 各时期处于大体相同发育阶段的早花果鲜质量极显著大于晚花果, 其果皮中GA_{1 + 3} 、IAA 和ABA 的含量以及IAA/ ABA 的比值均低于晚花果, 而ZRs 含量和ZRs/ ABA 比值高于晚花果。据此认为, 果皮中具有高的ZRs 含量和ZR_s/ ABA 比值与早花‘妃子笑’荔枝大果形成有关, 而晚花果中高含量的IAA 和IAA/ ABA 比值则与其高的坐果率有关。

Studies on Endogenous Hormones in the Pericarp of'Feizixiao'Litchi in Relation to Different Fruit Sizes from Early and Late Bloom

Endogenous hormone levels in the pericarp and the fruit mass were comparatively studied between the fruits from early and late blooms on the same panicles of ‘Feizixiao’litchi . The results showed that fresh mass of the early-bloom fruit was significantly larger than that of late2bloom , and contents of GA_{1 + 3} 、IAA , ABA and IAA/ABA ratio in the pericarp from early-bloom fruit were lower than those from late-bloom fruit , whereas , ZRs level and ZRs/ ABA ratio were higher during fruit development . It is suggested that higher ZR_s level and ZRs/ ABA ratio are associated with the formation of larger fruit size in early bloom , while higher IAA level and IAA/ ABA ratio might be related to higher fruit set for the fruit from late bloom.