찰옥수수와 단옥수수간 교잡으로부터 유래된 F2:3 집단에서 수량 및 식미관련 형질의 유전분석 (Genetic Analyses for Yield Components and Taste-Associated Traits in F2:3 Population Derived from the Cross between Waxy and Sugary Maize Inbred Line)

서지정보

· 발행기관 : 한국육종학회
· 수록지 정보 : 한국육종학회지 / 44권 / 3호 / 328 ~ 337페이지
· 저자명 : 박기진, 이주경, 사규진, 고희종

초록

This research was conducted to understand yield components and taste-associated traits for high quality waxy corn breeding using 158 F2:3 families of a crossing between sugary (KSS22) and waxy inbred (02S6140). This material complied with Mendel’s dominant and segregation law, was all normal kernel in F1, and the ratio of kernel types was 9 of normal, 4 of sugary,3 of waxy in F2 seeds.
Days to silking from sowing for F1 were seventy one days, earlier than seventy six days for parents and F2 families. Pericarp thickness in F1:2 and F2:3 seeds were 71 and 74 μm, respectively, thinner than parental average of 83.5 μm, therefore pericarp thickness of early progenies derived from a crossing of waxy parent (02S6140, 116 μm) and sugary parent (KSS22, 51 μm)skewed with the thin parent, KSS22. The average amylose content of sugary kernel genotypes ranged 2.3% to 10.8%, especially 2.3% for sugary kernel of susuwxwx genotype, showing significantly low content. In comparison with waxy kernel phenotype in F2:3 families, the waxy type segregated with double mutant sugary together had the amylose content of 5.4% compared with the other waxy families segregated from waxy or normal F2 kernel. It was much lower than the amylose content of waxy parent 02S6140, which has 6.6%. The broad-sense heritability of pericarp thickness was 0.82, indicating that we can breed high quality waxy corn with thinner pericarp and higher amylopectin content compared with the parents.

영어초록

This research was conducted to understand yield components and taste-associated traits for high quality waxy corn breeding using 158 F2:3 families of a crossing between sugary (KSS22) and waxy inbred (02S6140). This material complied with Mendel’s dominant and segregation law, was all normal kernel in F1, and the ratio of kernel types was 9 of normal, 4 of sugary,3 of waxy in F2 seeds.
Days to silking from sowing for F1 were seventy one days, earlier than seventy six days for parents and F2 families. Pericarp thickness in F1:2 and F2:3 seeds were 71 and 74 μm, respectively, thinner than parental average of 83.5 μm, therefore pericarp thickness of early progenies derived from a crossing of waxy parent (02S6140, 116 μm) and sugary parent (KSS22, 51 μm)skewed with the thin parent, KSS22. The average amylose content of sugary kernel genotypes ranged 2.3% to 10.8%, especially 2.3% for sugary kernel of susuwxwx genotype, showing significantly low content. In comparison with waxy kernel phenotype in F2:3 families, the waxy type segregated with double mutant sugary together had the amylose content of 5.4% compared with the other waxy families segregated from waxy or normal F2 kernel. It was much lower than the amylose content of waxy parent 02S6140, which has 6.6%. The broad-sense heritability of pericarp thickness was 0.82, indicating that we can breed high quality waxy corn with thinner pericarp and higher amylopectin content compared with the parents.

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