东北四种野生披碱草结实器官和种子产量性状的比较

THE COMPARISON OF CHARACTERS OF BEARING FRUIT ORGAN AND SEED YIELD TO CLINELYMUS OF FOUR WILD SPECIES IN NORTHEAST OF CHINA

对披碱草、肥披碱草、老芒麦和圆柱披碱草的结实器官和种子产量进行的研究表明,圆柱披碱草的穗序最短,每穗上的小花数和饱满籽粒数最少,小穗数最多,结实率最低,千粒重最高。肥披碱草的穗序最长,每穗上的小花数和饱满籽粒数最多,千粒重最低。披碱草的结实率最高。每个穗序上的小穗数以老芒麦最少。不同生境的肥披碱草,以生长在林下的各性状较旷野生长的明显低劣。

The comparison of characters of bearing fruit organ and seed yield was made at interspecific comparison and intraspecific comparison in different habitats to for age grass of four wild species of Clinelymus dakuricus, C. excelsus, C. sibirious and C. cylindricus in Northeast of China. The results showed that the shortest spike was 12.1±1.40cm, fewest number of floret and full seed of per spike was 61.8+14.40 and 51.3+12.09 respectively.Number of spikeiet was the most as 52.2+6.04, the lowest setting percentage was 82.2+9.24%, but that the highest weight of 1000 grain was 4.66+0.07 gram is popluation of C. cylinaruicus in the four wild species. The longest spike was 14.0+2.14cm, the most number of floret and full seed of per spike was 138.0+47.91 and 116.2+45.26 respectively, that the lowest weight of 1000 grain was 3.22+0.08 gramis population of C. excelsus The setting percentage was the highest as 90.8+6.07% on population of C.dahuricus. That the fewest number of spikelet of per spike was 37.7±8.73 was population of C. sibiricus, All characters were obvious inferior under the shadow of woodland than on the vast grassland of C. excelsus population