|Table of Contents|

Carbohydrate Accumulation and Change During the Development of Juglans.regia ‘Xinxin2’ Fruit

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年21
Page:
13-19
Research Field:
Publishing date:

Info

Title:
Carbohydrate Accumulation and Change During the Development of Juglans.regia ‘Xinxin2’ Fruit
Author(s):
ZHANG Cuifang; WANG Shiwei; MA Bin; JI Yu; ZHANG Mei; MA Haiyan
(College of Forestry and Horticulture，Xinjiang Agricultural University/Key Laboratory of Forestry Ecology and Industry Technology in Arid Region，Education Department of Xinjiang，Urumqi,Xinjiang 830052)
Keywords:
walnut; green peel; kernel; carbohydrate; enzyme
PACS:
-
DOI:
10.11937/bfyy.20190599
Abstract:
The main walnut cultivar ‘Xinxin2’ (Juglans.regia) in Southern Xinjiang Basin was used as the research object to study the the changes in contents of glucose，sucrose，fructose，starch and the activities of neutral invertase (NI)，acid invertase (AI)，sucrose synthase (SS) and sucrose phosphate synthase (SPS) in green peel and kernels sampled at different growth stages.The results showed that 45-70 days after flowering (DAF)，the fruit was in the fast-growing period；in green peel，the contents of fructose and glucose were higher than those of sucrose and starch，and AI activity remained high；in kernels，the fructose content was higher than those of sucrose，glucose and starch.90-110 DAF，the fruit was in the stage of oil transformation；in green peel，the sucrose content and the activities of SS and SPS increased rapidly；in kernels，the contents of sucrose and glucose were higher than that of fructose，and the activities of SS and SPS increased sharply，while the activities of NI and AI remained low.The results of correlation analysis showed that sucrose content in green peel was positively correlated with the activities of SS and SPS (P<0.05)，fructose content was positively correlated with AI activity (P<0.05)，starch content in seed kernel was positively correlated with starch content in green peel (P<0.05)，and negatively correlated with AI activity in green peel (P<0.05).During fast-growing period，sucrose in walnut green peel was decomposed into glucose and fructose under the action of high-activity AI，which provided material and energy basis for cell division and morphological construction of walnut.During oil transformation period，sucrose accumulation in walnut green peel and kernel was the result of high-activity SS，SPS and low-activity AI and NI.

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Last Update: 2019-11-26