International network for natural sciences – research journal
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Host status of sunflower (Helianthus annuus L.) against Charcoal rot caused by Macrophomina phaseolina in arid region of Bahawalpur, Pakistan

By: Muhammad Arshad Hussain, Muhammad Naveed Aslam, Arfa Bakht, Rashid Usman, Muhammad Sajjad, Saeed Ahmad

Key Words: Sunflower, Charcoal rot, Disease resistance, Susceptibility, Variety improvement

Int. J. Biosci. 9(6), 303-310, December 2016.

DOI: http://dx.doi.org/10.12692/ijb/9.6.303-310

Abstract

The present study was aimed to identify resistance in elite sunflower genotypes against charcoal rot disease for variety improvement program. Sixteen sunflower genotypes were selected to check the disease severity of charcoal rot. It was revealed that all the genotypes were susceptible to charcoal rot disease. The genotype 14068 was highly susceptible against the disease with high reduction in yield; however, genotypes 14013, 14052, 14082 and 14095 were resistant against the disease based on rating scale and resulted in high yield in arid region of Bahawalpur. Resistant genotypes need to be selected in breeding program to release new sunflower lines highly resistant against charcoal rot to feed ever increasing population of the world.

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