【摘要】 <正> 湿地松(Pinus elliottii Engelm)自本世纪30年代初被引种到我国以来,现已成为长江以南地区重要的用材树种。目前在扩大生产的同时,需要进一步开展遗传改良工作,以挖掘速生丰产潜力。本试验对湿地松无性系种子园自由授粉的14个家系进行遗传测定,了解各单亲子代播种质量的好坏和苗期遗传品质的优劣,为以后进行子代林测定和综合评价提供基础材料。更多还原

【Abstract】 The results of the experiment indicated that there were significant differences in the growth, seed plot germination percent and so on between the families; Seedling growth of two families were remar-kbly greater than that of the check and that of three families were obviously less than the check in height of the seedlings; The growth of seedlings in each family was positively related to 1000-seeds weight of it; The cold resistance of the seedlings in winter displayed some difference between and within the families; The elite families shown in the experiment were as follows: 08-18 and 06-20.更多还原