梨果萼脱落宿存过程中果萼幼果内源激素的变化动态

为了明确梨果萼脱落宿存与内源激素的关系,以库尔勒香梨、鸭梨、锦丰梨为试材,利用酶联免疫吸附分析法对梨果萼、花朵、幼果的生长素(IAA)、脱落酸(ABA)、赤霉素(GA3)、玉米素核苷(ZR)的质量分数进行了测定分析。结果表明,梨果萼和幼果中内源激素质量分数与果萼脱落宿存有密切关系。利于果萼宿存的因素有:幼果中IAA、ZR质量分数高,果萼中IAA、GA3、ZR质量分数高,果萼中ABA质量分数低,果萼中IAA、GA3、ZR质量分数与幼果中的质量分数比值大,果萼中ABA质量分数与幼果中质量分数比值小。利于果萼脱落的因素则相反。

Dynamic changes of phytohormone content in pear calyx and young fruit during calyx growth and development

Korla’s Xiangli,Yali, and Jinfengli pear cultivars were used as materials to make sure the relationship between pear fruit calyx shed or persistence and phytohormone content. IAA,ABA,GA3,ZR content in pear calyx and young fruit were determined using Enzyme-linked Immunosorbent Assays (ELISA) method. The results showed that there was an affinitive relationship between phytohormone content in pear calyx,young fruit and pear calyx shed or persistence. The factors promoting calyx persistence were as follows: high content of IAA and ZR in young fruit,high content of IAA, GA3 and ZR in calyx, low content of ABA in calyx,high ratio of IAA,GA3,ZR between calyx and young fruit,low ratio of ABA between calyx and young fruit. The factors promoting calyx shed were on the contrary.