Effects of Different Pollination Varieties on Fruit Growth and Endogenous Hormones Content in Malus domestica Borkh
In this experiment, Red Fuji apple 'Nagafu No.2' was used as female parent, and 'Meihong', 'He-hong', and 'Starking' were used as pollination varieties, then, dynamic changes of endogenous hormones contents, weight and vertical/horizontal diameter in fruit treated with pollination varieties were determined to explore mechanisms of cross pollination of apple. The results showed that: the single fruit weight, vertical/ horizontal diameter pollinated with 'Meihong' and 'Starking' peaked at the 10th, 14th and 22nd weeks after bloom, while those pollinated with 'Hehong' peaked at the 14th and 22nd weeks. Single fruit weight and vertical/horizontal diameter pollinated with 'Meihong' were higher than others from the 18th week after bloom to harvest time (the 26th week after bloom) (P<0.05). IAA, GA (GA3), ZR (zeatin) contents in fruits pollinated with 'Hehong' and 'Starking' increased at the 10th, 14th and 22nd weeks after bloom, coinciding with the net growth rate peaks. The IAA content in fruit pollinated with 'Meihong' was higher than that of 'Hehong' during the 8th and 26th weeks after bloom (P<0.05), while the GA3 content was higher than others during the 20th and 26th weeks after bloom (P<0.05), the ABA content was lower during the 22nd and 26th weeks after bloom (P<0.05) and the ZR content was higher at the 26th week after bloom (P<0.05). The results were concluded that: different pollination varieties affected endogenous hormones contents differently and regulated fruit growth and development; the variety 'Meihong' was more beneficial to raise fruit weight compared with the other pollination varieties used in the experiment.
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NSTL
万方数据
维普
