黑龙江农业科学Issue(3)：17-22,6.DOI:10.11942/j.issn1002-2767.2017.03.0017
寒地多年生麦草新种质的形态学分析与细胞学检测
Cytological Detection and Morphological Analysis of the New Germplasm on Cold-hardness Perennial Wheatgrass
摘要
Abstract
To enrich the northern cold pasture varieties,breeding the advantages of planting grass in the northern cold areas,the ten new germplasms of cold-hardness perennial wheatgrass which selected from hybrid offsprings of Trititrigia and Thinopyrum intermedium with the climatic characteristics of Harbin located in northeast of China were analyzed and detected by the cytological and morphological method in the research.The results showed that the natural growth periods of the 10 materials were all more than 3 years,and all of them had cold-resistance and perennial characteristics,even in winter of Harbin with low temperature under-30 ℃ they are safe.The roots were developed,in addition to 8LF2 1-1-4 and 11LF3 1-1-4,the other lines had underground rhizomes.The plants were in lush growth,there were 5 lines with tiller numbers more than 40 and 2 lines with spike lengths more than 24 cm.The average seed setting rate of 11LF3 1-1-4 and 11LF4 1-18-1 was above 80%,which was much higher than parental Th.intermedium.The germination rate of the 10 seeds was between 60%~90% and the stem dry weight of 5Q10L1-18-1 was up to 1.7 kg·m-2.The somatic cell chromosomes of them were all 42,which showed genetic stability,and the resistance of drought,cold,disease and other characteristics were also presented.It is provided theoretical and material foundation for forage grass breeding in the northern cold land.关键词
寒地/多年生麦草/中间偃麦草/再生性Key words
cold area/perennial wheatgrass/Thinopyrum intermedium/regrowth分类
农业科技引用本文复制引用
陈平,何莉,尚晨,李佶恺,张海玲,李集临,张延明..寒地多年生麦草新种质的形态学分析与细胞学检测[J].黑龙江农业科学,2017,(3):17-22,6.基金项目
国家重点研发计划资助项目(2016YFD0100102-16) （2016YFD0100102-16）
黑龙江省大学生创新创业训练计划重点资助项目(201610231024) （201610231024）
