作　　者： ; ; ;

机构地区： 华南农业大学园艺学院

出　　处： 《华南农业大学学报》 2004年第2期10-12,共3页

摘　　要： 探讨了田间喷施萘乙酸(NAA)对3个荔枝品种果实大小的影响,并对NAA的作用进行了分析.研究结果表明,在果实发育期喷3次40mg·L-1的NAA可以显著提高'妃子笑'、'淮枝'和'糯米糍'3个荔枝品种全果、果皮和果肉的质量,但对种子质量和可食率无影响;与对照相比,'妃子笑'果皮、果肉和全果的质量分别提高了9 4%、9 8%和9 9%,'淮枝'则分别提高了19 6%、13 3%和22 1%,而'糯米糍'分别提高了19 1%、25 0%和18 5%.另外,NAA处理也显著提高了3个品种的坐果率.14C-蔗糖标记试验更直接表明,经NAA处理的果实争夺同化物的能力比对照增加了近3 7倍.由此推测,NAA增大荔枝果实的原因可能与其增加果实调运养分的能力有关. 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.

关 键 词： 荔枝 萘乙酸 果实规格 田间喷施 果实调运养分能力

领　　域： [农业科学] [农业科学] [农业科学] [农业科学]