中国农业科学（英文版）2002，Vol.1Issue(6)：674-679,6.
Effect of Nitrogen on Apple Fruit Development in Different Loads
Effect of Nitrogen on Apple Fruit Development in Different Loads
PENG Fu-tian 1JIANG Yuan-mao 1GU Man-ru 1SHU Huai-rui1
作者信息
- 1. Department of Horticulture, Shandong Agricultural University, Taian 271018, P. R . China
- 折叠
摘要
Abstract
The experiments including soil application N, thinning and priming leaf treatment, using eight -year-old apple trees (M. domestica Borkh. cv. Red Fuji/M. hupenensis Rhed) as materials were carried out to study the effect of N on fruit development. The main results were as follows: on heavily thinned trees, SS activity was independent of N and priming leaves treatments. The results show that the carbohydrate restriction of source to sink activity did not exist, and N application did not stimulate fruit growth rates relative to those on nonfertilized trees; however, N fertilization resulted in a longer fruit development period and increased the growth potential of individual fruit by 20.8% (fresh weight) and 14.1% (dry weight) vs. controls; in unthinned trees, SS activity was increased by N fertilization but decreased by priming leaves treatment, so the carbohydrate restriction of source to sink activity existed, N fertilization increased the average single fruit weight both by extending the fruit development period and by increasing fruit growth rate, and the increasing rates were 28.2% (fresh weight) and 19.4 % (dry weight) compared to the unthinned nonfertilized controls. Fruit soluble sugar and pericarp anthocyanin concentration was decreased by N fertilization.关键词
Apple/Nitrogen/Fruit development/Sucrose synthaseKey words
Apple/Nitrogen/Fruit development/Sucrose synthase引用本文复制引用
PENG Fu-tian,JIANG Yuan-mao,GU Man-ru,SHU Huai-rui..Effect of Nitrogen on Apple Fruit Development in Different Loads[J].中国农业科学（英文版）,2002,1(6):674-679,6.
