|Table of Contents|

Effect of Exogenous 5-aminolevulinic Acid on Photosynthetic Capacity,Yield and Fruit Quality of Vaccinium ashei Reade(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年16期
Page:
9-12
Research Field:
Publishing date:

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Title:
Effect of Exogenous 5-aminolevulinic Acid on Photosynthetic Capacity,Yield and Fruit Quality of Vaccinium ashei Reade
Author(s):
WEI Ji-guang; YU Hong; ZHANG Xiao-na; JIANG Yan-qin; ZENG Qi-long
Institute of Botany,Jiangsu Province and Chinese Academy of Sciences,Jiangsu Province Key Laboratory for Plant Ex-situ Conservation,Nanjing,Jiangsu 210014
Keywords:
5- aminolevulinic acid; Vaccinium ashei Reade; photosynthesis; yield; fruit; size; quality; index
PACS:
S663.9
DOI:
-
Abstract:
With 12-year old Vaccinium ashei Reade cultivar ‘Gardenblue’ as materials,the effect of growth regulator of 5-aminolevulinic acid (ALA) on photosynthetic capacity,berry size,yield and fruit quality were studied.The results showed that the most effective levels of ALA for promoting photosynthetic capacity and yield were 300 mg/L.Application of 300 mg/L ALA resulted in the increase of chlorophyll content index,net photosynthetic rate,stomatal conductance,transpiration rate by 4.5%，19.8%，19.4% and 19.5%,respectively compared with control.An increase of 0.7% in the maximal photochemical efficiency of PSⅡ(Fv/Fm) and 10.9% in the effective quantum yield of PSII ［Y(II)］ in comparison with control was registered with the treatment of 300 mg/L ALA.The increase in longitudinal diameter,fruit diameter,fruit weight and total yield per plant with 300 mg/L ALA was 3.0%，3.3%，8.3% and 8.1%,respectively compared with control.Appropriate exogenous ALA increased soluble sugar content,but decreased fruit titratable acid content.The decrease in fruit vitamin C content mainly caused by enlargement of berry.Low and high level ALA-treated plants accumulated higher fruit total phenolic and total flavonoids content.These results suggested that adequate exogenous ALA application improved yield of Vaccinium ashei Reade mainly through increasing photosynthetic capacity and berry size.Several quality parameters also improved by appropriate exogenous ALA application.

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Last Update: 2014-09-25