南瓜不同品种果实生长发育动态的研究

本文对南瓜3个不同品种果实发育动态进行了研究，结果表明：不同品种南瓜果实发育有2个高峰期。第1个高峰期是决定果实重量与大小及种子大小的关键时期，美洲南瓜品种西葫芦出现在授粉后7d-14,印度南瓜品种灰皮南瓜和中国南瓜品种托县南瓜则在授粉后14d与28d内。第2个高峰期是决定种子产量和品质的关键时期，也是决定果实重量的又1个重要时期，美洲南瓜品种西葫芦在授粉后21d-35d，印度南瓜品种灰皮南瓜和中国南瓜品种托县南瓜在授粉后28d-42d,3个品种果实发育相比，美洲南瓜品种发育速度要快于其余二者。

STUDIES ON DEVELOPMENT DYNAMICS OF FRUITS OF DIFFERENT VARIETIES OF PUMPKIN

The paper studied development dynamics of fruits of three varieties of cucurbita.The results showed that the development of fruit of three varieties had two peak time.The first peak time determined the weight of fruit and size of fruit and seed,it appeared from 7 to 14 days in variety XI Hulu squash (C.pepo L.),14 days and 28 days in Hui Pi pumpkin(C.maxima Duch.)and Tuo Xian pumpkin(C.moschata Duch) after flowering.The second peak time determined output and quality of seed,and weight of fruit also increased rapidly,it appeared from 21 to 35 days in Xi Hulu squash,from 28 to 42 days in Hui Pi pumpkin and Tuo Xiao pumpkin after flowering.Compared three varieties speed of fruit development,that of variety Xi Hulu squash was faster than others.