Title: NAA sprays increased litchi fruit size and its roles
Abstract: Effects of Naphthaleneacetic acid (NAA) sprays and its roles on increasing fruit size in three lychee ( Litchi chinensis Sonn. ) cultivars were studied. Field experiment results showed that NAA three sprays at 40 mg·L~(-1) during fruit development significantly increased fruit size,but had no influence on seed mass and the ratio of aril to fruit mass. Such sprays increased pericarp mass by 9.4% , aril mass by 9.8% , and whole fruit mass by 9.9% in 'Feizixiao' , where the increment of pericarp, aril and whole fruit mass were 19.6%, 13.3% and 22.1% in 'Huaizhi', and 19.1%,25.0% and 18.5% in 'Nuomici' respectively. Moreover, NAA sprays also increased the fruit set significantly in three litchi cultivars. The Results marked by ~(14)C- sucrose indicated that such sprays raised the competing strength for assimilates in the pericarp by nearly 3.7 times as compared to that in the control. It suggested that the fruit size increased by NAA sprays was related to the competence of fruit to draw assimilates.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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