2024年5月22日 星期三
结缕草属(Zoysia Willd.)植物物候期的差异分析
Difference analysis of phonological phases of Zoy sia Willd.
2008年 第17卷 第3期 页码[53-57]    下载全文[0.7MB]  
摘要

于2005年至2006年在南京市对结缕草属(Zoysia Willd.)5种1变种共109份种源的物候期进行了系统观测分析。结果表明,不同种源间各植物物候期的时间存在不同程度的差异,其中进入盛花期、枯黄期、返青期、结实期、初花期和孕穗初期的时间分别相差58、56、38、35、33和29d;不同种源的青绿期为215~277d。孕穗初期的早晚与初花期、盛花期、结实期和枯黄期的早晚及青绿期的长短呈显著正相关,返青期早晚与青绿期的长短呈极显著负相关,而枯黄期的早晚与青绿期的长短则呈极显著正相关,说明返青期越早青绿期越长,枯黄期越早青绿期越短。另外,结缕草属植物的返青期、孕穗初期、初花期、盛花期及枯黄期均随原分布地纬度的增加显著提前。 

Abstract

The phenological phases of 109 accessions of ZoysiaWilld. Including five species and one variety were observed systematically during 2005 to 2006 in Nanjing. The results show that there is difference in the date of phonological phases among different accessions. The different days of the date of full flowering stage, withering stage, turning green stage, seed setting stage , initial flowering stage and initial booting stage are 58, 56, 38, 35, 33 and 29d, respectively. The green period of different accessions is 215- 277d. The date of initial booting stage has a significantly positive correlation with the date of initial flowering stage, full flowering stage, seed setting stage, withering stage and the length of green period. The date of the turning green stage has a highly significant negative correlation with the length of green period and that of withering stage has a highly significant positive correlation with the length of green period, which indicates that the earlier the turning green stage begin, the longer the green period is; the earlier withering stage begin, the shorter the green period is. Furthermore, the turning green stage, initial booting stage, initial flowering stage, full flowering stage and withering stage of Zoysia Willd. advance obviously with latitude increasing of origins.

关键词结缕草属; 物候期; 纬度; 差异;
Key wordsZoysia Willd.; phonological phase; latitude; variation
作者宣继萍,周志芳,刘建秀,郭爱桂
所在单位江苏省•中国科学院植物研究所(南京中山植物园),江苏南京210014
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基金项目国家自然科学基金资助项目(30371011); 江苏省自然科学基金资助项目(BK2005073);