LOSS OF RESISTANCE IN HSF-240 AGAINST WHIP SMUT OF SUGARCANE OVER CONSECUTIVE RATOONS
Muhammad Asad Farooq, Awais Rasool, Muhammad Zubair, Ali Bahadar, Sagheer Ahmad, Shahid Afghan
Abstract
HSF-240, one of the elite sugarcane varieties, was observed for its reaction with sugarcane smut over three consecutive years under natural conditions. The study includes plant crop, first year ratoon and second year ratoon crops. The data revealed that in plant crop only 4.25 % stools were infected with smut and crop proved to be resistant during that year. In first year ratoon 18.39 % stools were infected with the disease and crop stood tolerant against the disease. However in second year ratoon the disease infected up to 38.19 % of stools rendering the crop severely susceptible to this disease. This suggests a swift replacement of HSF240 with new and promising varieties, dejection of this variety in future as a plant crop as well as a ban on keeping ratoon of this variety.
Keywords
Sugarcane; ratoon; HSF-240; disease reaction; whip smut
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Pakistan Sugar Journal ISSN: 1028-1193 © Sugarcane Research and Development Board (SRDB). All Rights Reserved.
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