青稞种质资源对条纹病的抗性鉴定

Disease resistance identification of hulless barley germplasm accessions to leaf stripe

条纹病是青藏高原青稞生产上的重要种传病害之一,常采用药剂拌种防治,但培育和推广抗病品种是防控该病害最经济有效的措施。为发掘抗条纹病的优良青稞种质资源,本研究以田间鉴定和利用2个菌株室内人工接种鉴定相结合的方法,对231份青稞种质资源进行了抗条纹病评价,获得免疫性遗传资源材料20份,高抗类型材料18份,中抗类型材料44份,分别占鉴定总资源数的8.7%、7.8%、19.1%;其他149份青稞资源材料对条纹病表现为感病,其中36份材料为中度感病类型,113份材料为高度感病类型,感病材料占总鉴定材料的64.5%。

Stripe disease is one of the important seed-borne diseases in the production of hulless barley on the Qinghai-Tibet Plateau,and it is often controlled by medicinal seed dressing.However,the cultivation and promotion of disease-resistant varieties is the most cost-effective measure to prevent and control the disease.In order to explore the excellent hulless barley germplasm resources resistant to stripe disease,231 hulless barley germplasm resources were evaluated against stripe disease by combining field identification and indoor identification with two strains.Twenty immune germplasms,18 highly resistant germplasms and 44 medium resistant germplasms were obtained,accounting for 8.7%,7.8%and 19.1%,respectively.The rest 149 hulless barley germplasms showed susceptibility to stripe disease,among which 36 germplasms were moderately susceptible and 113 were highly susceptible,accounting for 64.5%.