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Effect of Summer Chilling on the Shoot Growth of Second Harvest 'Kyoho' Grapevines
The vines were treated with different duration of chilling in 5℃ in summer. The results showed that treatment of 5℃ chilling for 300 hours could promote budbreak and shoot growth in the second harvest vines, prolong the chilling duration could not accelerate budbreak but enhanced the shoot growth after budbreak. Chilling treatment in summer could increase the plant viability, and the activities in pre-budbreak stage were higher in chilling or budforcing roots of vines. Chilling treatment in summer from July to August could increase the content of total soluble sugars, and decreased the starch and the soluble protein content. The content of free amino acid decreased in the pre-budbreak stage of chilling, but increased as chilling was prolong to 900 hours.
|Appears in Collections:||第25卷 第02期|
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