摘要
浙江省大麦品种资源耐湿性鉴定试验结果表明:(1)浙江省是全国耐湿性大麦品种资源最丰富的区域之一;(2)各项湿害指数间存在显著正相关,而单项湿害指数对综合湿害指数的“贡献率”是:每穗实粒数和单株绿叶数均接近30％,株高约25％,千粒重15％左右;(3)品种的耐湿性与其农艺性状间呈负相关;(4)品种的湿害指数随原产地的雨量、雨日和积温的增加而下降;(5)采用迭代聚类法将全省划分为四个大麦气候生态区,其中第Ⅰ气候生态区(浙北)的品种耐湿性强度明显高于其它三个区。(6)初步筛选出一批耐湿性较好、农艺性状较优的品种。
The test results in barley germplasm resources of Zhejiang Province show that the Province is one of the most abundand area in China for barley wet-tolerance germplasm resources; There exist significantly positive correlations among wet-damage indexes, while the percentage of each item to their total wet-damage index is close to 30％ for both the filled grains in an ear, and the number of green leaves in each plant is near 25％ and 15％ for plant height and 1000-grain weight respectively; The agronomic characters are significantly and negatively correlated with wet-tolerance indexes; The total index of wet-damage decreases with increase of rainfall, rainy days and accumulated temperature at original place of the varieties tested; Based on the method of iterative cluster analysis, the Province can be divided into 4 barley ecological zones. In the first zone (i.e.north of the Province)Wet-tolerance of barley germplasm resources is more than those of other 3 zones; And some varieties which are good in both degree of wet-tolerance and agronomic characters are preliminarily identified and selected.
出处
《浙江农业学报》
CSCD
1990年第4期145-150,共6页
Acta Agriculturae Zhejiangensis
关键词
大麦
品种资源
耐湿性
浙江
Barley germplasm resources
Wet-tolerance
Wet-damage index
Ecological zone
