云南3个主要石榴品种果实生长动态的研究

对甜绿籽、甜光颜和厚皮甜砂籽3个云南主要栽培石榴品种的果实纵径、横径、果形指数和体积的动态变化进行了观测研究。结果表明:甜绿籽和厚皮甜砂籽果实纵、横径的生长变化较为一致,其纵径生长呈现"快-慢-快"的变化程序,而横径的生长分"快-慢"两个阶段;甜光颜果实的纵径生长呈现"快-慢"两个阶段,横径生长呈"快-慢-快-慢"变化状。甜绿籽和厚皮甜砂籽果实的果形指数呈倒"S"型,甜光颜果实的果形指数呈倒双"S"型。厚皮甜砂籽果实的体积变化呈现"慢-快-慢-快"4个阶段;甜绿籽和甜光颜2个品种果实的体积在其整个生长发育过程中一直平稳增长。3个石榴品种果实纵径、横径与其果实体积的变化曲线较为相似,甜绿籽、甜光颜和厚皮甜砂籽果实的纵、横径与体积均呈极显著相关,且为同步增长。

Fruit Growth Dynamics of Three Main Pomegranate Varieties in Yunnan

The fruit growth dynamics of three pomegranate varieties named 'Tianluzi','Tianguangyan' and 'Houpitianshazi' was studied by examining the several indexes such as longitudinal diameter,transverse diameter,fruit form index and fruit size.The results showed that the fruit change trend of 'Tianluzi' and 'Houpitianshazi' was similar,the change of longtitudinal diameter and transverse diameter showed the characteristics of 'fast,slow,then fast' and 'fast then slow'.The change of longtitudinal diameter of 'Tianguangyan' showed the characteristics of 'fast then slow',whereas the change of transverse diameter showed the trend of 'fast,slow,fast,then slow'.The fruit form index of 'Tianluzi'and 'Houpitianshazi' was inverted single S-shaped growth curve,that of 'Tianguangyan' was inverted double S-shaped growth curve.The fruit size growth of 'Houpitianshazi' has four stages of 'slow,fast,slow and fast',that of other two varieties showed the balanced growth.The results also indicated that the change curves of longitudinal diameter,transverse diameter and fruit size were similar.The longitudinal diameter and transverse diameter were very significantly correlated with fruit size,which implied the synchronous growth of these three indexes.