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Development and identification of wheat-Ag.pulcherrimum addition line and substitution line with BYDV resistance
1Institute of Crop Breeding and Cultivation, Chinese Academy of Agricultural Sciences, Beijing, China.
Abstract:
Breeding materials derived from CPI113500, amphidiploid of T. turgidum x Ag.pulcherrimum with barley yellow dwarf virus (BYDV) resistance, were evaluated by using BYDV resistance test, morphology observation, cytogenetics analysis, aneuploid analysis, isozyme electrophoresis, in situ hybridization. Two new germplasms resistant to BYDV were obtained. They were T.aestivum-Ag. pulcherrimum disomic addition line 96S16-11, and T. aestivum-Ag. pulcherrimum disomic substitution line 96W14-9.
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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 chance to...

