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对中国东部有代表性的40份假俭草[EremochloaOphiuroides(Munro)Hack.]种源的物候期进行了观测分析,结果表明:(1)中国东部地区假俭草种质资源的返青期、孕穗初期、盛花期、成熟期、枯萎期、青绿期均存在着不同程度的变异,其中不同种源物候期变异范围大小依次为:孕穗初期(5月29日~9月29日)>盛花期(8月28日~10月24日)>成熟期(10月9日~11月20日)>枯萎期(11月7日~12月1日)>返青期(4月18日~5月8日)。青绿期的变异范围为189~217d。(2)中国东部地区假俭草种质资源的返青期和孕穗初期随着纬度的增加而日趋提前。(3)中国东部地区假俭草种质资源的返青期、孕穗初期、盛花期、成熟期、枯萎期、青绿期间有一部分存在着显著或极显著的相关性。返青期与孕穗初期、盛花期、枯萎期呈显著的正相关,相关系数分别为0.3557、0.3429、0.3995,盛花期与枯萎期呈显著的正相关,相关系数为0.3526;孕穗初期与盛花期、成熟期呈极显著的正相关,相关系数分别为0.7834、0.4626,盛花期与成熟期呈极显著的正相关,相关系数为0.6592;而返青期与青绿期呈极显著的负相关,相关系数为-0.8019,表明假俭草的返青期愈早,青绿期愈长。
The phenophases of 40 representative centipedegrass (Eromochloa Ophiuroides (Munro) Hack.) In eastern China were observed and analyzed. The results showed that: (1) The centromere and booting of centipedegrass germplasm in Eastern China There were different degrees of variation in full bloom, mature, withered and green phases in the early stage, among which the variation ranges of phenophase of different provenances were as follows: early booting stage (May 29-September 29)> full flowering stage August 28 to October 24)> maturity (October 9 to November 20)> wilting (November 7 to December 1)> return to green (April 18 to May 8 day). The variation range of green-blue period is 189 ~ 217d. (2) The centipedegrass and early booting stage of centipedegrass germplasm resources in eastern China increased with latitude. (3) There were significant or extremely significant correlations between the centromere resources of returning centipede, early booting stage, full flowering stage, mature stage, withered stage and green stage in Eastern China. There was a significant positive correlation between returning greening stage and booting stage, full flowering stage and wilting stage, the correlation coefficients were 0.3557,0.3429,0.3995 respectively, there was a significant positive correlation between full bloom stage and wilting stage, the correlation coefficient was 0.3526; The correlation coefficients were 0.7834 and 0.4626, respectively. There was a significant positive correlation between flowering stage and mature stage, the correlation coefficient was 0.6592; while the turning green stage and the green stage were extremely significant negative correlation, the correlation coefficient was - 0.8019, indicating that centipede grass turning green early, green longer.