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Harnessing Wheat Fhb1 for Fusarium Resistance
Yuanfeng Hao1, Awais Rasheed2, Zhanwang Zhu1
1Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), 12 Zhongguancun South Street, Beijing 100081, China.
Abstract:
Fusarium head blight (FHB), caused by the fungus Fusarium graminearum, is an economically devastating disease of wheat worldwide. Fhb1, a widely used genetic source of FHB resistance, originated in East Asia. The recent cloning of Fhb1 opens a new avenue to improve FHB resistance in wheat and potentially other crops.
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01:59Plant Breeding and Biotechnology
02:27Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...