贵长猕猴桃果实生长发育规律研究

Fruit Growth and Development Regulation of Guichang Gooseberry

定期测量8-9年生贵长猕猴桃果实的纵径、宽横径和厚横径,观察果实生长发育动态。结果表明：1）贵长猕猴桃果实生长呈逐渐上升的单曲线,有两个生长期：即快速生长期（5月20日-6月16日）和缓慢生长期（6月16日-8月4日）。随果实接近成熟,其生长曲线与时间轴线逐渐趋于平行。2）果实净增长有3次生长高峰：第1次,纵径出现在5月27日,宽横径出现在6月9日,厚横径出现在6月9日-6月16日,纵径比横径提前两周;第2次,果实纵径、宽横径和厚横径都出现在6月30日;第3次,纵径出现在7月21日,宽横径出现在8月11日,厚横径出现在7月14日。随后生长速度迅速降低,9月1日以后接近停止生长。3）不同留果量和不同留果部位不影响贵长猕猴桃果实纵、横径的生长高峰次数,但影响纵、横径生长高峰出现的时间和生长曲线的起伏程度。

The fruit growth and development trend of Guichang gooseberry was studied by measuring fruit length,width and thickness of Guichang gooseberry with 8～9 years age regularly.The results showed that the fruit growth presented a single curve with gradual rise,there were two growth periods of fast growth and slow growth,the growth curve gradually paralleled with the time axis when fruits were nearly ripe,there were three growth peaks in fruit net increment,the different reserved fruit number and different fruit-bearing position had no effect on growth peak times of fruit length and width,but had effect on growth peak date of fruit length and width and undulate degree of the growth curve.