摘要
以同一株‘妃子笑’荔枝不同花期果实为研究对象,探讨它们在果实发育和糖组分动态及品质方面的差异.研究结果表明:早花果和晚花果的果实及其各组织的生长型均为单S型,其果实发育时期均可划分为I期和II期,第II期又可划分IIa期和IIb期,所不同的是,早花果的I期比晚花果要长10 d.推测晚花果假种皮在IIb期生长受抑的现象主要还是由于I期和IIa期的果皮和种皮生长受到抑制的结果.早花果的糖分积累主要发生在IIa期,晚花果的糖分积累则主要发生在IIb期,它们均是以积累还原糖为主,成熟时两者在总糖及其各组分之间并无显著差别.早花果比晚花果品质好主要表现在果大、含酸量低、固酸比高等方面.
Fruit development , sugar accumulation dynamics and fruit quality were comparatively studied between fruit from early and late blooms on the same panicle in litchi cv. ‘ Feizixiao’. The results showed that no differences in the growth patterns of whole fruit and fruit parts （ single S pattern） were revealed between fruit from female bloom at different dates. Their fruit growth could be divided into two stages （stage Ⅰ and stage Ⅱ）, and stage Ⅱ could be divided into two substages （ Ⅱa and Ⅱb）. However, fruit from earlier bloom showed 10 d longer in stage Ⅰ than that from late bloom. It was presumed that the significant lower growth rate of the whole fruit and aril from late bloom during stage Ⅱb were related to their obviously lower growth rate of the pericarp and seedeoat during stage Ⅰ and stage Ⅱa compared with the fruit from early bloom. In both case, fruit accumulated more reducing sugars than sucrose and the main sugar accumulating period was in stage Ⅱa for fruit from early bloom and in stage Ⅱb for the fruit from late bloom. There was no significant difference in sugars content between fruits from early and late bloom. The better quality of fruit from early bloom than that from late bloom was because the former had bigger fruit mass, lower total acid（TA） and higher TSS/TA ratio.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2005年第4期5-9,共5页
Journal of South China Agricultural University
基金
国家自然科学基金资助项目(30370995)
关键词
荔枝
不同花期
果实发育
糖积累
果实品质
litehi（ Litchi chinensis Sonn. ）
different female bloom dates
fruit development
sugar accu mulation
fruit quality
