CAJ | 학술논문

以61个川西云杉（ Picea balfouriana）家系为研究对象，对各家系的2年生实生苗的苗高、地径、侧枝数、根系长和干质量5个生长性状进行了遗传分析和通径分析，并采用综合选择指数法评选优良家系。结果表明：川西云杉各性状在家系间存在极显著差异（ P＜0．01），干质量的遗传变异系数最大，根系长最小，苗高、干质量的遗传力最大，地径的遗传力最小；地径对苗高的直接贡献最大，根系长通过地径对苗高的间接作用最大。通过综合选择指数法，评选出6个优良家系，这些家系的苗高实际增益为15．74％～65．95％，遗传增益为12．44％～52．13％。
이61개천서운삼（ Picea balfouriana）가계위연구대상，대각가계적2년생실생묘적묘고、지경、측지수、근계장화간질량5개생장성상진행료유전분석화통경분석，병채용종합선택지수법평선우량가계。결과표명：천서운삼각성상재가계간존재겁현저차이（ P＜0．01），간질량적유전변이계수최대，근계장최소，묘고、간질량적유전력최대，지경적유전력최소；지경대묘고적직접공헌최대，근계장통과지경대묘고적간접작용최대。통과종합선택지수법，평선출6개우량가계，저사가계적묘고실제증익위15．74％～65．95％，유전증익위12．44％～52．13％。
With 61 Picea balfouriana as testing materials, a progeny test was conducted on five traits of two-year-old P.balfouri-ana by analyzing the genetic variation , phenotypic variation and path .The superior families were selected by index selec-tion.The family effect was highly significant for all the traits .The genetic variation coefficients of dry weight were the high-est.The genetic component of dry weight was the highest , and the heritability was also highest .Through the comprehensive selection index method , six good family were selected with the seedling height practical gain of 15.74%-65.95%and ge-netic gain of 12.44%-52.13%.