CAJ | 학술논문

在人工接种条件下,对860份玉米材料进行了纹枯病抗性鉴定和评价,旨在为进一步开展玉米纹枯病抗性育种和分子生物学研究奠定基础.结果显示,在鉴定的860份玉米材料中,没有发现免疫的材料,高抗、抗、中抗、感和高感的比例分别为3.49%、28.60%、26.16%、10.35%和31.40%;在农家种、群体种和杂交种(组合)等杂合体中,抗病材料所占比例较大,而自交系等纯合体中,感病材料所占比例较大,表明玉米杂合体种质资源材料中可能蕴藏着不同的抗纹枯病基因,特别是广西农家种中可能存在对纹枯病具有稳定抗性的材料,值得进一步研究和利用.
재인공접충조건하,대860빈옥미재료진행료문고병항성감정화평개,지재위진일보개전옥미문고병항성육충화분자생물학연구전정기출.결과현시,재감정적860빈옥미재료중,몰유발현면역적재료,고항、항、중항、감화고감적비례분별위3.49%、28.60%、26.16%、10.35%화31.40%;재농가충、군체충화잡교충(조합)등잡합체중,항병재료소점비례교대,이자교계등순합체중,감병재료소점비례교대,표명옥미잡합체충질자원재료중가능온장착불동적항문고병기인,특별시엄서농가충중가능존재대문고병구유은정항성적재료,치득진일보연구화이용.
By artificial inoculation,eight hundred and sixty maize germplasm were screened and evaluated for resistance to sheath blight caused by Rhizoctonia solani .The results showed that no any germplasm with immune to the disease was found,and a few germplasm were highly resistant.The germplasm percentage of highly resistant,resistant,moderately resistant,susceptible and highly susceptible to sheath blight was 3.49%,28.60%,26.16%,10.35% and 31.40%,respectively.The results indicated that heterozygotes,such as local landraces,populations and hybrids,had higher percentage of resistant and moderately resistant germplasm,and homozygotes,i.e.inbred lines,was with more susceptible and highly susceptible germplasm.It meaned that in heterozygotes there were some different resistance genes,and in landraces of Guangxi there were some resistant germplasm with stable resistance genes to sheath blight and these genes would be researched and used for variety improvement.