›› 2019, Vol. 31 ›› Issue (6): 900-907.DOI: 10.3969/j.issn.1004-1524.2019.06.06

• Horticultural Science • Previous Articles     Next Articles

Effects of rain-sheltered cultivation on sugar accumulation and nutritional growth of early-maturing sand pear fruit in Xuhuai area

LI Gangbo1, ZHANG Mei1, FAN Jide1, ZHAO Lin1, ZHANG Ting1, LIN Jing2, CHANG Youhong2, YANG Feng1, *   

  1. 1. Xuzhou Institute of Agricultural Sciences in Xuhuai Area of Jiangsu, Xuzhou 221121, China;
    2. Institute of Horticulture, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing 210014, China
  • Received:2018-12-04 Online:2019-06-25 Published:2019-06-26

Abstract: In order to study the effect of rain-sheltered cultivation on sugar accumulation and vegetative growth of early-maturing pear fruits, the changes of sugar content, shoot length, shoot diameter and leaf fresh weight , leaf dry weight and leaf water content of early-maturing pear Sucui 1 and Cuiguan fruits in rain-sheltered cultivation and open-field cultivation were analyzed by high performance liquid chromatography. The results showed that: (1) The light intensity of rain-sheltered cultivation environment was lower than that of open-field cultivation, and the diurnal average variation trends of light intensity of two cultivation modes were basically the same. The cultivation environment constructed by rain-sheltered facilities had an effect on the formation of fruit quality. Fructose and glucose contents were higher during the fruit growth and development period, and sucrose accumulation increased in the later period. The accumulations of fructose and sucrose were the highest in the late stage. The accumulation of soluble sugar in fruit was 21.73% and 17.97% higher in sheltered cultivation than in open field cultivation. (2) The contents of organic acid in the fruits of two early-maturing pear cultivars under rain-sheltered cultivation were lower than those of open-field cultivation, and the contents of malic acid, citric acid and quininic acid were mainly affected. The contents of malic acid in Sucui 1 and Cuiguan fruits were 35.08% and 21.05% lower than those of open-field cultivation, respectively, but the content of shikimic acid was not affected obviously. (3) Rain-sheltered cultivation had no significant (P>0.05) effect on shoot length, diameter and leaf dry weight of early-maturing pear, but had great effect on leaf fresh weight and leaf water content. Leaf fresh weight of Sucui 1 and Cuiguan under rain-sheltered cultivation were 8.22% and 10.15% lower than those of open field cultivation, respectively. Leaf water content of Sucui 1 and Cuiguan with rain shelter cultivation were both significantly (P<0.05) lower than those of open field cultivation.

Key words: rain-sheltered cultivation, sand pear, sugar accumulation, vegetative growth

CLC Number: