STUDIES ON STRATEGIC MANAGEMENT METHODS TO GAIN INSECT RESISTANCE TO BT CROPS
Dr. Puran Prabha
Page No. : 49-54
ABSTRACT
Six new varieties of Cotton for 2015, three containing the Bollgard gene from Monsanto and three with Monsanto’s Roundup Ready gene. DP20B is an early maturing variety with the Bollgard gene were grown for experimental purpose. Yields have been excellent in irrigated or rain-fed conditions in areas with a shorter growing season. Plants are medium height with good storm resistance, fiber quality and gin turnout. DP20B is a smooth leaf variety. Fiber quality grades have been good in company-sponsored trials. Micronaire ranges form 4.1 to 4.6, strength ratings are from 25 to 27. DP50B is an early maturing Bollgard variety that yields well under a variety of environmental and soil conditions. It’s a short to medium, smooth leaf variety with good storm resistance, fiber quality and gin turnout Micronaire ranges from 4.2 to 4.8 and strength ratings are 25 to 27. Length is in the 1.18-1.19 range, micronaire, 4.4-4.8 and strength, 27-29. Wilt tolerance is fair. Lint percent is 37.5-39.0. PM1220 is available with RR, BG and RR/BG. PM1220 is an early maturing variety, medium tall, semi-smooth leaf variety with superior storm resistance, producing 4,000-4,200 seeds per Kg. Length is 1.14-1.15, micronaire, 4.5-4.9 and strength, 27-29. Wilt tolerance is fair. Lint percent is 38.0-39.5. Gene Campaign has conducted a small field study to collect data on the performance of Bt. crops and non-Bt. crops . The survey was conducted in selected locations in Haryana and included a total of 100 farming families selected by random sampling. The Bt crops varieties compared were Bt. 162 and Bt. 184 belonging to Mahyco-Monsanto and the non-Bt crops varieties were the local hybrids.
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