[Effects of canopy shapes of grape on canopy microenvironment, leaf and fruit quality in greenhouse].
The effects of three canopy shapes, i.e., vertical canopy, V-shaped canopy and horizontal canopy, on canopy microenvironment, quality of leaves and fruits were studied in the 3-year-old grape 'Jingmi' grafted on ' Beta' in greenhouse. The results showed that gap fraction and openness of vertical canopy were significantly higher than that of V-shaped canopy and horizontal canopy, and leaf area index, light interception rate and canopy temperature difference between day and night were significantly lower than those of V-shaped canopy and horizontal canopy. There was no significant difference between the latter two treatments. The palisade thickness of V-shaped canopy was significantly greater than that of vertical canopy, and horizontal canopy was in the middle. The chlorophyll and carotenoid contents of V-shaped canopy were significantly higher than those of vertical canopy and horizontal canopy, and those in the latter two treatments had no significant difference. The fruit quality of V-shaped canopy was the best, and that of horizontal canopy was the worst. The results of GC-MS analysis showed that 29 types of volatile aroma compounds were detected in V-shaped canopy, but just 17 and 16 in vertical canopy and horizontal canopy, respectively. In V-shaped canopy, the characteristic aroma in grape 'Jingmi' was higher, except ethanol, trans-2- hexene-1-alcohol, 2-octyl ketone and formic acid ester. The linalool content in vertical canopy and V-shaped canopy was higher than that in horizontal canopy. The nerol content in V-shaped canopy was higher than that in vertical canopy and horizontal canopy, and the leaf alcohol content in V-shaped canopy and horizontal canopy was higher than that in vertical canopy. The citronellol was de-tected only in V-shaped canopy. In greenhouse, the fruit aroma of V-shaped canopy grape was stronger, and well reflected the variety characteristics.
Xiang-bin
XB
Shi
Feng-zhi
FZ
Liu
Cun-gang
CG
Cheng
Xiao-di
XD
Wang
Bao-liang
BL
Wang
Xiao-cui
XC
Zheng
Hai-bo
HB
Wang
D000383:Agriculture / Q000379:methods*; D002338:Carotenoids / Q000737:chemistry; D002734:Chlorophyll / Q000737:chemistry; D005638:Fruit / Q000737:chemistry*; D008027:Light; D009812:Odorants; D010788:Photosynthesis; D018515:Plant Leaves / Q000737:chemistry / Q000502:physiology*; D027843:Vitis / Q000502:physiology*; D055549:Volatile Organic Compounds / Q000737:chemistry
D055549:Volatile Organic Compounds; D002734:Chlorophyll; D002338:Carotenoids