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| Study on the New Selecting Method of Polyphenol Oxidase Pigmentation to Increase Wheat Pre-harvest Sprouting Resistance Ability |
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Abstract Polyphenol oxidase pigmentation method was studied using different wheat cultivars and F2 of different cross combinations. The results were as fallows: the suitable condition of seed treatment was that under room temperature 18~25℃, wheat seeds were put in 0.125% catechol solution and kept for 10~15min, then the seeds were covered with plastic membrane and kept for 4~6h. After drying, the seeds were graded in term of color display. There was a significant positive correlation between sprouting percentage and colored seed grade. Light colored seeds with low polyphenol oxidase activity had higher resistance to pre-harvest sprouting than those of dark colored seeds. The new wheat variety Baomai 8 with high resistance ability to pre-harvest sprouting was successfully selected and bred using this method. It was registered and released to commercial production in Hebei Province in 2004 (registered number: JS2004012).
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Received: 06 September 2006
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