Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Genetic analysis of seed characters in parents and F1 hybrid of rice

벼의 종자특성에 대한 유전분석

  • 정원복 (동아대학교 생명자원과학대학 유전공학과) ;
  • 오주성 (동아대학교 생명자원과학대학 유전공학과) ;
  • 황필성 (동아대학교 생명자원과학대학 유전공학과)
  • Published : 2007.04.25
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Abstract

The study were performed genetic analysis for seed characters of 6 parents of rice cultivar and 15 $F_1$ hybrids. In terms of heritability, The highest value was observed in the character of No. of grains/spike. Second values was showed 1,000 grains weight and head rice ratio was high value than grain length and width. In an analysis of correlation relation of parent, significant positive coefficients were observed in head rice ratio and No. of grains/spike, grain length and 1,000 grains weight, but the negative coefficients were significantly revealed between grain length and No. of grains/spike. Phenotype coefficient was lowly observed in the relation of grain length and 1,000 grains weight, grain width and 1,000 grain weight that highly positive genetic coefficient was showed in an analysis of correlation relation of $F_1$. In terms of heterosis, highest value was showed 1,000 grains weight and second value was No. of grains per spike and 1,000 grains weight and second value was No. of grains per spike in terms of heterobeltiosis. In an analysis heterosis of among crossing combination, high ratio was observed 1st combination at seed length, 12th combination at seed width, 3rd combination at head rice ratio, 5th combination at 1,000 grains weight and 11th combination at No. of grains per spike. In an analysis heterobeltiosis of among crossing combination, high ratio was observed 1st combination at seed length, 12th combination at seed width, 3rd combination at head rice ratio, th combination at 1,000 grains weight and 11th combination at No. of grains per spike.

벼 잡종 $F_1$세대의 종자특성에 대한 유전분석과 잡종강세에 대한 결과는 다음과 같다. 1. $F_1$세대의 유전력은 1수립수가 97.99%로 가장 높았으며 천립중, 완전립율의 순으로 나타났고 완전립율이 입장이나 입폭에 비하여 높은 유전력을 보였다. 2. 교배친의 형질간 상관관계는 완전립율과 1수립수, 입장과 천립중간에 유의한 정의 상관을 보였으나 입장과 1수립수, 입폭과 완전립율간에 유의한 부의 상관을 보였다. 그리고 $F_1$세대의 형질간 상관관계는 입장과 입폭간에 높은 부의 유전상관을 보였으나 표현형상관에서는 유의성이 인정되지 않았다. 입장과 천립중, 입폭과 천립중간에도 높은 정의 유전상관을 나타내었으나 표현형상관은 유의하지 않았다. 3. heterosis는 천립중이 7.71%였고, 다음이 1수립수, 완전립율의 순이었다. heterobeltiosis 또한 천립중이 5.29%였고, 다음이 1수립수, 완전립율의 순이었다. 4. 교배조합간의 heterosis는 입장이 1(밀양165호${\times}$장령도)조합에서 13.33%, 입폭이 12(신동진벼${\times}$장령도)조합에서 13.79%, 완전립율이 3(밀양165호${\times}$남천벼)조합에서 16.11%, 천립중이 5(밀양165호${\times}$동진찰벼)조합과 11(동진찰벼${\times}$고시히까리)조합에서 각각 12.64%, 12.13%, 1수립수가 11(동진찰벼${\times}$고시히까리)조합에서 22.83%로 높았다. 그리고 heterobeltiosis는 입장이 1(밀양165호${\times}$장령도)조합에서 8.80%, 입폭이 12(신동진벼${\times}$장령도)조합에서 10.00%, 완전립율이 3(밀양165호${\times}$남천벼)조합에서 13.06%, 천립중이 5(밀양165호${\times}$동진찰벼)조합과 11(동진찰벼${\times}$고시히까리)조합에서 각각 10.01%, 10.83%, 1수립수가 11(동진찰벼${\times}$고시히까리)조합에서 21.40%로 높았다.

Keywords

References

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