纖維用亞麻의 育種에 關한 硏究 (1) 量的形質의 遺傳力과 그들間의 相關

• 영문명: Studies on the Breeding of Fiber-flax Variety (I) Heritability of quantitative characters and their associations
• 발행기관: 한국육종학회
• 저자명: K.Y. Chung(鄭奎鎔) E.S. Lee(李殷燮) K.H. Kang(姜光熙) Y.A. Chae(蔡永岩)
• 간행물 정보: 『한국육종학회지』Vol.2 No.1, 1~6쪽, 전체 6쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 1970.12.30

국문 초록

畓前作 纖維用 亞麻育種의 當面課題인 長莖 早熟品種을 育成하기 위하여 4交配組合의 F₂에서 우선 몇가지 形質에 對한 廣義의 遺傳力을 調査하였던바 얻어진 結果는 다음과 같다. 1. 草長에 對한 遣傳力은 4個組合이 서로 비슷하게 높았으며 이들의 全體平均은 0.745였다. 2. 莖長의 遺傳力은 組合에 따라 變異가 컸으며 Wiera×Horal는 0.73으로 높은 反面에 Fibura×Horal는 0.29로 甚히 낮았고 이들 4組合의 平均은 0.495였다. 3. 開花日數의 遺傳力도 組合間 差異가 커서 Wiera×Horal, Fibura×Horal는 各各 0.76, 0.78로 높은 反面에 Atlas×Fibura는 0.26으로서 가장 낮았으며 이들 4組合의 平均은 0.578이었다. 4. 分離世代인 4個組合의 F₂에서 이들 形質間의 相關은 草長對 莖長은 높은 正相關(0.7016), 草長對開花日數, 莖長對開花日數間에는 各各 0.4562, 0.5812로 比較的 높은 正相關關係를 보았다. 5. 遺傳力과 遺傳進展量으로 볼때 草長과 莖長이 높은 方向으로 選拔은 可能하나 早熟이면서 同時에 草業과 莖長이 높은 個體의 選拔은 熟期와 草長間에 높은 正相關 때문에 難點이 있다고 본다.

영문 초록

In order to develop an efficient breeding program of flax for long fiber of high quality and early maturity, informations are needed on heritability of plant height, stem length, flowering date and on associations among these characters. Four crosses were made; Wiera×Horal, Atlas×Horal, Fibura×Horal and Atlas×Fibura. Data were taken on individual plant basis for the population and their parents. Estimation of heritability was obtained by: (수식), where VF₂is total F₂variance of the character, VP₁and VP₂are environmental variances of the respective parents. (1) Heritability of plant height for the four combinations was high with almost same values and their total average was 0.745. (2) Variation of heritability of stem length in the four combinations was some what large and their average was 0.495. (3) Average of heritability of flowering date for the four combinations was 0.578 and the Atlas×Fibura combination showed the lowest heritability (H=0.26). (4) In the segregating F₂population, plant height was positively correlated with stem length(r=0.7016**) and flowering date(r=0.4562**) and stem length showed positive correlation with flowering date (r=0.5812**). (5) Selection on plant height or stern length is possible based on the high heritability of these characters but the high positive correlation between plant height and heading date indicates the difficulty of the selection of tall height plant with early maturity.

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