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장수형 밀의 계통 특성 분석 I. 농업 형질과 관련 유전자 특성

Characterization of Korean Wheat Line with Long Spike. I. Agronomic Traits and Genetic Variations

김보경|김경호|박철수|박종철|정영근|김경훈|김학신|손재한|강천식
한국육종학회 (The Korean Society of Breeding Science)|2015.09|한국육종학회지 (KOREAN JOURNAL OF BREEDING SCIENCE)|제47권 제3호|pp. 219-228|DOI http://dx.doi.org/10.9787/KJBS.2015.47.3.219

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참고문헌

키워드

WheatAgronomic TraitsLong spikeAllelic variation
주제분류농학

초록

국내 밀의 수량 증진을 위해 이삭 길이가 길고 1수립수가많은 장수형 164계통(F8)을 육성하였고, 본 연구에서는 이들계통의 주요 농업형질과 이들 특성과 관련 있는 표지인자에대한 평가를 수행하였다. 장수형 계통은 모본인 금강밀과 비교했을 때, 단위면적당 수수와 리터중은 적고, 파종 후 출수까지 일수가 길었고, 간장, 수장, 1수립수와 단위면적당 생산량은 높게 나타났다. 농업 특성 관련 표지인자를 평가한 결과, 장수형 계통은 Rht-B1, Rht-D1, Vrn-B1, Ppd-A1, Ppd-B1 유전자 좌에서는 같은 유전자를 지닌 것으로 나타났다. 장수형 계통 중 Vrn-D1를 지닌 계통은 Vrn-D1a를 지닌 계통에비하여 출수에 걸리는 시간이 길었지만, 이삭길이와 1수립수가 많은 것으로 나타났다. 하지만 Vrn-B1 유전자 변이는 장수형 계통의 농업형질의 차이가 없는 것으로 나타났다. 장수형은 Ppd-D1유전자 변이에 따른 간장이나 이삭 길이는 차이가 없었지만, 출수 일수와 수수는 Ppd-D1b를 지닌 계통이 많았지만, 1수립수, 천립중, 리터중과 수량은 Ppd-D1a를 지닌계통이 높았다. 종실 특성을 나타내는 표지인자 변이는 출수일수, 간장, 수장, 분얼이나 1수립수 및 수량에는 영향을 주지않았지만 TaSus2-2B유전자의 Hap-L타입, TaGW2유전자의Hap-6A-G타입과 TaCwi-A1a 가 각각의 대립 유전자형보다천립중이 높게 나타났다. 향후 재배환경이 장수형의 농업형질및 품질에 미치는 영향에 대한 평가가 필요하고, 만숙과 분얼이 적은 장수형의 단점을 보완하기 위한 지속적인 연구가 필요하다.

Abstract

One hundred sixty four wheat (Triticum aestivum L.) lines expressing the long spike were developed by the National Institute of Crop Science, Rural Development Administration. Six of 11 genes showed allelic variation among 164 lines and they were highly related to yield traits containing spike and kernel number, kernel length, 1000-kernel weight and grain yield. Analysis of allelic variation of each gene showed high correlation between allelic variation and agricultural characteristics. Coefficient of correlation between culm length and spike length was the highest 0.436. The heading date of the lines expressed Vrn-D1 allele was late and the lines expressed Vrn-D1 allele had longer spike length and higher number of kernel per spike than other lines. There was no significant difference in agronomic characteristics of analysis of Vrn-B1. Ppd-D1b was related to heading date and higher number of spike/m2. Ppd-D1a was corresponded to number of kernel per spike and 1000-kernel weight. Three haplotypes, Hap-L, Hap-6A-G and TaCwi-A1a, were related to 1000-kernel weight.

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