摘要
花药体细胞植株,集芽接树和实生树的优点于一体,是一种幼态自根无性系,表现出许多优良性状: 1.生长快。比母体芽接树快9—20％,大致可提早一年开割投产。 2.产量高。海垦1和海垦2花药体细胞植株头两割年平均单株产量分别为母体无性系的131％和143％。 3.发育阶段从老态回复到幼态。表现在:和实生苗一样有一条粗壮的主根及一轮侧根;茎干圆锥度大,酷似实生树;取1.5年生植株的芽片芽接,抽生的嫩枝与砧木夹角小。这和老态型(抽生嫩枝与砧木夹角大)有明显差别,植株性状整齐一致;抗逆性强,经济寿命长,可排除砧木对接穗的不良影响。因此花药体细胞植株是一种很有发展前途的新一代种植材料。
Hevea anther somatic plants which combines both the advantages of seedlings and buddings, is a juvenile self—root clone that has showed a number of desirable characteristics:1. Faster growth, girth increment 9-20％ faster than its donor buddings, that being able to reach the standard of tapability one year earlier;2. Higher yield: juvenile self-root clones Haiken 1 and Haiken 2 which gave a mean yield per tree over 2 years 131％ and 143％ of their respective donor buddings; 3. Developmental stage returned from mature: type to juvenile type. This is characterized by, (1) like seedlings anther plants having a strong taproot and lateral roots; (2) larger trunk conisity resembled to seedlings; (3) smaller included angle of shoots to stocks when budding made with budpatches from 1.5—year—old plants, which is quite different from mature—type with larger included angle of shoots to stock; (4) good uniformity in growth and morphological characters and (5) like seedlings with better stress tolerance and longer economic life.Besides, anther somatic plant can evade the undesirable effects of stocks on scions. Therefore, it is a promising new planting material.
出处
《热带作物学报》
CSCD
1989年第2期17-23,共7页
Chinese Journal of Tropical Crops
关键词
橡胶树
花药
体细胞
植株
性状
Hevea brasiliensis
anther somatic plant
developmental stage
characteristics
