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1995年7月到1996年5月对大田生长的黍属大黍草和着色稷等6个品种的生长发育特点和越冬性进行了观察,阐明了它们抗寒性的差异及基因改良提高越冬性和在大田生长的能力。 入冬前,6个品种活分蘖枝总数变化较大,Mubarikario逐渐增加,着色稷的其它种,即Tayataka和Tanidori逐渐下降,大黍草的3个品种即Natsukaze,Green paric和Gatton的NAT、GRE和GAT迅速下降。Mubarikario营养枝(VTs)数量最大,而生殖枝(Prt)占活分蘖枝的比例最小,Mubarikario再生植株,即春季新的再生分蘖枝植株数占植株总数的比例最高,其次为Tayattaba,Gatton和Green paric,Natsukaze和Tanidori的再生植株数为零。10月底至12月底,再生植株数与营养枝数呈正相关,与生殖枝呈负相关,与植株干质量无显著相关性。总之,越冬前,黍属中营养枝数量较大且活分蘖芽比例高的品种越冬力高。
From July 1995 to May 1996, the growth characteristics and overwintering of 6 cultivars of millet and milletgrass grown in the field were observed and their differences in cold tolerance and genetic improvement were found. And the ability to grow in the field. Before winter, the total number of live tillers varied greatly among the six cultivars, while Mubarikario gradually increased. Other species of P. tabacum, ie, Tayataka and Tanidori, decreased gradually. The three cultivars, Natsukaze, Green paric and Gatton, NAT, GRE And GAT dropped rapidly. Mubarikario had the highest number of vegetative branches (VTs), while the proportion of reproductive branches (Prt) accounted for the smallest proportion of live tillers. The proportion of Mubarikario regenerated plants, that is, the number of new regenerated tillers in spring accounted for the highest proportion of the total number of plants, followed by Tayattaba, Gatton and Green The number of regenerated plants of paric, Natsukaze and Tanidori is zero. From the end of October to the end of December, the number of regenerated plants was positively correlated with vegetative shoots, negatively correlated with reproductive shoots, and had no significant correlation with plant dry weight. In conclusion, before winter, the number of vegetative shoots in the genus Panicula and the high percentage of live tiller buds had high winter power.