摘要
调查分析了五三农场果团三个砂梨品种(Pyrus pyrlfolla Nakai)树体状况与结果的关系。结果显示:砂梨平均单果重量 Y 与果实负载量 X 在一定范围内,呈极显著的负相关,且因品种而异,湘南,晚三吉、长十郎相关方程分别为: _1=247.25-11.28x_1, _2=220.53-8.37x_2, _3=162.65-4.03x_3;结果枝组姿态对单果重量的影响,与品种习性有关,晚三吉梨果个大小随枝组从直立到斜生、平生和下垂的变化过程由大变小,大小差异经邓肯法检验,均达到显著水平;湘南梨果个大小受枝组姿态影响差异不明显。
Effects of fruit number and position of fruit-bearing shoot cluster on fruit size of three Sand Pear (Pyrus Pyrlfolla Nakai)cultivars were studied on Wushan Farm in 1992.The result showed that there was a very significant negative correlation,which varied with cultivars,between the mean fruit weight(in g)(y)and the fruit number per cm trunk perimeter(x)in a certain range.The relationship between them of the three cultivars ‘Xiangnan’,‘Okusankichi’and ‘Chojuro’ could be described respectively by: _1=247.25-11.28 x_1, _2=220.53-8.37x_2 and _3=162.65-4.03x_3.The influence of the position of fruit-bearing shoot cluster on mean fruit weight was also varied with caltivars.The mean fruit weight of ‘Okusankichi got lower and lower as the position of the cluster became drooping gradually.The difference of the mean fruit weight between them was significant at 5% level by SSR test.While the position of fruit-bearing shoot cluster had no effect on the fruit size of ‘Xiangnan.’
出处
《湖北农学院学报》
1993年第3期177-183,共7页
Journal of Hubei Agricultural College
基金
湖北省教委资助课题
关键词
砂梨
品种
果个大小
原因
Sand pear
fruit size
crop load
fruit-bearing shoot cluster
