翠冠梨新梢与果实生长发育动态及相关性研究

Study on the Relationship Between Twig and Fruit of Cuiguan Pear

定期测量六年生翠冠梨新梢的长度和果实纵径、横径,观察新梢与果实生长发育的动态。结果表明,新梢自4月2日开始生长,到6月5日停止生长,生长发育期为64d,生长期间出现两次生长高峰,分别在4月26日和5月6日。果实发育从4月2日坐果到7月20日果实成熟,生育期为109d。果实纵横径生长呈S型曲线;发育过程中出现3次生长高峰,即4月16日、5月6日和6月5日。新梢生长与果实发育关系密切,4月26日前,新梢与果实生长竞争养分激烈;4月26日到5月6日期间,新梢与果实生长竞争减弱;6月5日新梢停止生长后,果实膨大迅速并达到生长高峰。

The fruit diameter and the length of twig, fruit of six-year-old Cuiguan pear trees were investigated. Results showed that new twig grew on April 2, and terminated on June 5 with the development period of 64 days. There were two growth peaks during the growth period. They were April 26 and May 6. The fruit development period from the fruit setting on April 2 to maturation on July 20 was 109 days. The growth of fruit length and fruit diameter showed S type curve, with three growth peaks during the development period on April 16, May 6 and June 5 respectively. The growth of new twig was tightly related to the development of fruit. The new twig and the fruit competed for nutrition before April 26. The competition was reduced from April 26 to May 6, and after June 5 the new twig terminated, the fruit swelled rapidly and reached growth peak.