CAJ | 학술논문

通过有性杂交和辐射处理5个决明属牧草品种进行新品种选育研究.结果表明:圆叶决明种内杂交取得成功;圆叶决明和羽叶决明种间杂交,以圆叶决明为母本的杂交组合已有结荚后代;有性杂交筛选到6株农艺性状已基本稳定的生物量大、分枝多的杂交株系后代.辐射育种筛选到5个品质优良的新品系,其中2个86134品种辐射变异后,后代品系的茎长和生物量有明显提高,茎叶比则呈明显下降;2个92985品种辐射变异后.后代品系的粗蛋白含量有明显提高;1个34721品种辐射后.后代品系的Ca含量有明显提高.
통과유성잡교화복사처리5개결명속목초품충진행신품충선육연구.결과표명:원협결명충내잡교취득성공;원협결명화우협결명충간잡교,이원협결명위모본적잡교조합이유결협후대;유성잡교사선도6주농예성상이기본은정적생물량대、분지다적잡교주계후대.복사육충사선도5개품질우량적신품계,기중2개86134품충복사변이후,후대품계적경장화생물량유명현제고,경협비칙정명현하강;2개92985품충복사변이후.후대품계적조단백함량유명현제고;1개34721품충복사후.후대품계적Ca함량유명현제고.
Five accessions of Chamaecrista spp. were used for breeding and selection of new cultivars by crossing and irradiation treatment. The results showed that Chamaecrista rotundifolia succeeded in intraspecific crossing. The interspecific crossing between C. rotundifolia and C.nictitan with C.rotundifolia as female parent succeeded and produced its progeny. Six individual plants of the progeny of the crosses were selected to have larger biomasses and more branches and stable agronomic characters. By irradiation breeding 5 desirable mutants were selected from the 5 accessions of Chamaecrista spp. Of the 5 mutants 2 were selected horn the progeny of mutants of C.rotundifolia accession 86134 and had obviously higher stem length and biomass but a lower ratio of stem to leaf; 2 were selected from the progeny of mutants of C. rotundifolia accession 92985 and had notably higher crude protein content; and 1 was selected from the progeny of mutants of C.rotundifolia accession 34721 and contained evidently higher calcium.