几种生长调节剂及与CaCl2混合处理对"黄花"梨果肉钙含量的影响

为弄清梨幼果钙动态及生长调节物质对其调控作用，以“黄花”梨为试材进行了研究，结果表明：IAA、GA3处理均增加了采收时果肉中总Ca的含量，但推迟了其含量高峰的到来，使用IAA CaCl2、GA3 CaCl2的处理其果肉总Ca含量峰值分别高于单独施用IAA或GA3的峰值，它们峰值到来的时间分别早于IAA或GA3单独处理；NAA处理推迟了果肉中总Ca的含量高峰，没有增加果肉中总Ca的含量，使用NAA CaCl2其果肉总Ca含量峰值与对照和单独施用NAA无显著差异；无论是什么处理，果实膨大期都是果实总Ca含量降低，Ca^2 升高的转变时期；还对促进果实对钙吸收的方法及总Ca和Ca^2 含量变化的生理意义和Ca^2 的功能进行了讨论。

Effects of Several Plant Growth Regulators and Their Mixture with CaCl2 Treatment on Calcium Content in "Huanghua" Pear Fruits

The content of calcium in 'Huanghua' pear was studied in order to clarify the calcium dynamic in pear fruits and its regulation role by the plant growth regulators. The result showed that IAA and GA3 treatments both were capable of improving calcium content in fruits during harvest time, but the time when content peak appeared was deferred. The calcium concentration peaks of IAA+CaCl2 and GA3 + CaCl2 treatment were higher than the peaks of the treatment of only IAA or GA3 respectively, and the time when peaks came was earlier than treatments of only IAA or GA3. The NAA treatment put off the total calcium peak, but NAA treatment did not increase the total calcium content in flesh, and the calcium content of NAA+ CaCl2 treatment was similar to the control in both time and quantity. The rapid expanding stage was the crucial time when Ca2+ increased and total calcium decreased no matter which treatment was. Furthermore, method about how to improve calcium uptake by fruits and physiological significance of total calcium and Ca2+ changes were discussed in this paper.