Studies on agronomic traits of seedlings from different F1 generations of Dendrobium officinale / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To select superior mating combinations from different F1 generations of Dendrobium officinale.</p><p><b>METHOD</b>Twenty-six superior parents from four provenances were selected to make up 26 mating combinations. The agronomic traits of different F1 generation were measured, counted, and analyzed by DPS software.</p><p><b>RESULT</b>There were significant differences between different mating combinations among F1 generations. The variation among full-sib families was significantly higher than that among half-sib families, while the variation inside full-sib families was significantly lower than that inside half-sib families. Twelve agronomic traits were simplified into four principal components, of which the accumulative contribution rate was 84.127 3%. Twenty-six mating combinations have been divided into six groups, plants from the fifth and sixth group grew much better than the others.</p><p><b>CONCLUSION</b>The selection of parents should be emphasized by using hybrid vigor. There were higher genetic gains and superior uniformity inside families when selection and breeding occurs in full-sib families than in half-sib families. Eight superior full-sib families (83 x 34, 66 x 9, 68 x 2, 91 x 69, 66 x 65, 69 x 91, 17 x 66, 66 x 17) have been selected which showed a good agronomic traits of seedlings.</p>