泰山红石榴果实生长发育动态研究

以泰山红石榴(Punica granatum L.cv.Taishanhong)为试材,于花后1周开始观测果实体积、果实直径、平均单果重、子粒百粒重、果实中总可滴定酸含量、总可溶性固形物含量等各项果实发育相关指标,寻求其动态变化规律,以全面了解石榴果实生长发育动态。结果表明,泰山红石榴果实生长发育约历时5个月,经历幼果期、果实膨大期、果实转色期和果实成熟期4个时期。随着果实体积的增加,果实出现3次迅速生长期,分别在花后4周、13周和19周。果实生长发育期内,果实体积、果实直径、平均单果重、子粒百粒重、总可滴定酸含量及总可溶性固形物含量两两均存在相关性,且均达显著以上水平,这些相关性可为生长发育期的判定提供参考。

Study on the Growth and Development of Punica granatum L. cv. Taishanhong Fruit

To fully understand the dynamic changes of Punica granatum L. cv. Taishanhong fruit during growth and development, P. granatum cv. Taishanhong fruits were observed since one week after flowering, the fruit diameter, average fruit weight, hun-dred grains weight of the seeds, titratable acidity of fruits, total soluble solids and other fruit growth and development indica-tors were measured. The results showed that the development period of P. granatum cv. Taishanhong fruit could be divided into 4 phases: young fruit, fruit enlargement, fruit coloring and fruit maturity. The fruit growth and development may last for about 5 months. During different growth period of dynamic change, with the increase of fruit volume, 3 fruit rapid growth phases were observed; the rapid growth phases were separately found on the 4th, 13th and 19th week. Fruits volume, the increase of fruit diameter, weight of single fruit, hundred-grain weight, titratable acid content and total soluble solids content are signifi-cant pairwisely correlated, while the correlation can provide the basis for judging developmental phase.