摘要
以菠萝‘无刺卡因’(Ananascomosus‘SmoothCayenne’)为试材,对栽培管理条件一致的冬季果和夏季果的糖含量及其代谢相关酶活性的变化规律进行研究。结果发现,2月份采收的冬季果发育为快—慢不典型的单‘S’型规律,而7月份采收的夏季果发育为典型的单‘S’型规律(慢—快—慢),且夏季果比冬季果发育期短40d。2月份采收的冬季果,成熟时己糖与蔗糖的比值为0.37,主要以积累蔗糖为主;而7月份采收的夏季果,成熟时己糖与蔗糖的比值为5.92,主要以积累己糖为主。不同产期菠萝果实蔗糖积累与蔗糖代谢酶的活性存在明显差异。2月份采收的果实发育过程中积累较多的蔗糖,主要与蔗糖磷酸合酶和蔗糖合酶的合成活性升高、转化酶活性降低有关;7月份采收的果实蔗糖积累较少,主要与转化酶活性的升高有关。表明不同产期的菠萝果实发育及糖代谢不同。
The fruit of pineapple cultiva＇rSmooth Cayenne＇（Ananas comosus） cultured under similar management conditions were harvested in winter（February）and summer（July）to determine their sugar content and their metabolism-based enzyme activities in relation to their growth and development.The pineapple fruit harvested in February showed a non-typical single＇S＇pattern（fast-slow model）in their growth and development,while those harvested in July displayed a typical single＇S＇pattern（slow-fast-slow model）,and the fruit harvested in July matured 40 days earlier than those harvested in February.The fruit growth period had an effect on the sugar accumulation of the pineapple fruit.The ratio of hexose to sucrose was 0.37 in the fruit harvested in February with more sucrose accumulated,and 5.92 in the fruit harvested in July with more hexose.Significant difference in sugar accumulation and sucrose metabolism enzymes was observed between the fruit harvested in February and July.The higher sucrose content in the fruit harvested in February was mainly related with the higher activities of SPS and SS synthesis and the lower invertase activity in the fruit,whereas the lower sucrose content in the fruit harvested in July was mainly related with the higher invertase activity in the fruit.This revealed that different fruit growth periods had some impact on the growth and development and sugar metabolism of the pineapple fruit.
出处
《园艺学报》
CAS
CSCD
北大核心
2010年第11期1751-1758,共8页
Acta Horticulturae Sinica
基金
‘948’项目(2006-G34(A))
农业部行业计划项目(3-41)
中央级公益性科研院所基本科研业务费专项(200701)
非营利性科研机构改革专项启动专项(sscriqd200907)
广东省自然科学基金项目
海南省自然科学基金项目(808182)
关键词
菠萝
季节
糖积累
糖代谢相关酶
pineapple
Ananas comosus（L.）Merr.
different growth period
sugar accumulation
enzyme related to sugar metabolism
