Sources of Resistance Against Post-flowering Stalk Rots of Maize
The post-flowering stalk rots (PFSR) are a complex disease, which are widely distributed in almost all the maize growing regions across the globe. A number of fungi are involved in causing decay of the pith resulting in pre-mature wilting of the plants. Most of the commercially grown cultivars have shown high level of disease incidence at the grain filling stage. A systematic breeding programme on PFSR was initiated in India in collaboration with Asian Regional Maize Program of CIMMYT. Under this program, germplasm screening was carried out at four hot spot locations in India for different pathogens Hyderabad (Cephalosporium maydis), Udaipur (Fusarium moniliforme), Ludhiana and Delhi (Macrophomina phaseolina). Across the locations, promising maize genotypes were artificially inoculated using the toothpick method, year after year; resistant plants were selfed to derive resistant inbreds. After extensive screening, three resistant lines, namely PFSR-13-5, JCY2-2-4-1-1-1-1 and JCY3-7-1-2-1-b-1 were identified. In addition, the resistance level of five pools/populations; (PFSR (Y)-C1, PFSR (white), Extra- early (White), P-100, P-300 and P-345) was upgraded to an acceptable level. These genotypes may prove useful for utilization in breeding cultivars for resistance to PFSR.
Maize PFSR resistance Fusarium moniliforme Cephalosporium maydis Macrophomina phaseolina
Sangit Kumar Meena Shekhar R. C. Sharma R. S. Rathore
Directorate of Maize Research, Indian Agricultural Research Institute, New Delhi-110012, India Division of Plant Pathology, Indian Agricultural Research Institute, New Delhi-110012, India Rajasthan Colleges of Agriculture, MPUA&T, Udaipur-313001, Rajasthan, India
国际会议
第九届亚洲玉米大会(the Ninth Asian Regional Maize Workshop)
北京
英文
162-165
2005-09-05（万方平台首次上网日期，不代表论文的发表时间）