|Table of Contents|

Effect of Branch Renewal Cycle on Fruit Disease Resistance of ‘Lyuling’ Walnut

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年11
Page:
45-49
Research Field:
Publishing date:

Info

Title:
Effect of Branch Renewal Cycle on Fruit Disease Resistance of ‘Lyuling’ Walnut
Author(s):
QIANG Jingsha1; 2; 3; CHEN Liying1; 2; 3; HAN Xuehua1; 2; 3; MA Huabing1; 2; 3
(1.Hebei Lyuling Fruit Co.Ltd.,Xingtai,Hebei 054300;2.Research Center for Walnut Engineering and Technology of Hebei,Xingtai,Hebei 054300;3.Institute of Walnut Industry Technology of Hebei Province(Xingtai),Xingtai,Hebei 054300)
Keywords:
branch renewal cycle; ‘Lyuling’ walnut; disease resistance of fruit
PACS:
-
DOI:
10.11937/bfyy.20183717
Abstract:
In order to explore the effect of the renewal of precocious walnut branches on the disease resistance of fruits,the fruit incidence of short-term renewal (the age of branch to be renewed is 2-3 years) and conventional renewal (the age of branch to be renewed is 3-4 years) trees was investigated with 6-year-old ‘Lyuling’ walnut tree as test material.The results showed that in the early stage of fruit onset,there was no significant difference in the rate of good fruit between short-term and conventional renewal trees,and the fruit disease resistance indexes were 5.58 and 3.61,respectively,showing that the short-term renewal tree was significantly higher than the conventional renewal tree.In the fruit maturity period,the fruit morbidity and disease index of short-term renewal trees were 64.07% and 41.08,which were significantly lower than those of conventional renewal trees at 84.54% and 59.95.From early onset to fruit maturity,the good fruit rate of short-term renewal trees decreased by 34.93%,significantly lower than 43.05% of conventional regeneration trees,and the disease index increased by 22.20,which was significantly lower than that of the conventional renewal tree (31.35).It could be seen that the disease deterioration rate of the fruit of the short-term renewal tree was significantly slower than that of the conventional renewal tree.In a word,short-term renewal could significantly improve the disease resistance of precocious walnut fruit,and had significant effect on delaying the fruit disease aggravation.

References:

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Last Update: 2019-07-09