论文部分内容阅读
秋诱一号泡桐是1977年春,我们采用化学诱变剂秋水仙素万分之六浓度进行处理白花桐,诱发突变之后选育出来的。第一代当年生植株叶片绉缩严重,叶片扁宽,宽长比为1.3∶1,亲本为1∶1;叶小畸形,叶片增厚,叶色浓绿,生长缓慢;株高比亲本低16%,地径细7%,第二年新叶无绉缩现象。1978年春取该株上的种根进行繁殖,苗木表现速生,超过了亲本。全年生长量株高比亲本提高16%,地径提高10%。1979年春移栽造林后,1979年10月调查秋诱1号高543厘米,亲本为480厘米,生长量增加13%,自然接干好,胸径增粗9%,新梢长160.75厘米,比亲本增长4%。1979年又继代繁殖,一切优良性状全部可以遗传。分枝角度小,长势特别旺盛,叶绿素含量高于亲本。6月16日气温为38℃—42℃,相对湿度为12—20%,秋诱一号的光合强度为每小时每平方分米同化20.1588mg CO_2(亲
Qiuqiu No. 1 Paulownia is the spring of 1977, we use chemical mutagen colchicine six ten thousandths of the concentration of Baihuitong, induced mutation after breeding out. The first generation of current year plant leaves crepe deformity, flat leaf width, width to length ratio of 1.3: 1, the parental 1: 1; small leaf deformities, leaf thickening, leaf color dark green, slow growth; 16%, fine diameter 7%, the second year no new wrinkles shrink phenomenon. The spring of 1978 to take the strain on the plant breeding, fast-growing seedlings, more than the parent. Annual growth of 16% higher than the parental plant height, diameter increased by 10%. After the spring planting and reforestation in 1979, Qiu liang 1 was 543 cm high and its parent was 480 cm. Its growth was increased by 13% in October of 1979, and its natural diameter was increased by 9%. Its diameter was 160.75 cm longer than that of its parent Increase by 4%. Reproduced in 1979 and subsequent generations, all fine traits can be genetic. Branching angle is small, particularly strong growth, chlorophyll content higher than the parent. On June 16, the temperature was 38 ℃ -42 ℃ and the relative humidity was 12-20%. The photosynthetic intensity of Qiuliang 1 was 20.1588mg CO2 per square decimeter per hour