论文部分内容阅读
采用苗期盆栽的方法,以五寨黑豆(抗)、07-2-10-6(抗)和合丰35(感)、07-2-7-14(感)为试验材料,测定不同抗性大豆对胞囊线虫3号生理小种生长发育动态的影响。结果表明,五寨黑豆及07-2-10-6根系分泌物能抑制线虫卵的孵化,而合丰35及07-2-7-14根系分泌物能刺激线虫卵的孵化。培养10d后,合丰35及感病后代07-2-7-14的线虫卵孵化相对值分别为3.71和4.38,五寨黑豆及抗病后代07-2-10-6的线虫卵孵化相对值分别为0.89和1.39。大豆根内各龄线虫数量的动态变化结果表明,侵入抗病品种中的J2幼虫数量较少,只有部分J2幼虫可以进一步发育成高龄期的线虫,且发育速度迟缓,雌雄比值为1∶4.13;侵入感病品种中的J2幼虫群体数量大,多数能够正常发育成更高一级的虫体,发育速度明显大于抗病品种中的J2幼虫,雌雄比值为10.56∶1。五寨黑豆抗大豆胞囊线虫是其根外抗性、抗发育和抗繁殖多种抗病机制综合作用的结果。
Wuzhai black beans (anti), 07-2-10-6 (anti) and Hefeng 35 (flu), 07-2-7-14 (flu) were used as materials to measure different resistance Effect of soybean on the growth and development of cyst nematode. The results showed that Wuzhai black beans and 07-2-10-6 root exudates could inhibit the hatching of nematode eggs, whereas the root exudates of Hefeng 35 and 07-2-7-14 could stimulate the hatching of nematode eggs. After 10 days of culture, the relative values of hatching of nematode eggs of Hefeng 35 and susceptible offspring 07-2-7-14 were 3.71 and 4.38, respectively. The hatching of nematode eggs of Wuzhai black bean and resistant progeny 07-2-10-6 The relative values were 0.89 and 1.39, respectively. The results showed that the number of J2 larvae in invaded resistant varieties was small, only some J2 larvae could further develop into the nematode of advanced age, and the growth rate was slow, the ratio of male to female was 1: 4.13. J2 invaded susceptible varieties of large numbers of J2 larvae, the majority can normally develop into a higher level of worms, develop significantly faster than the resistant varieties of J2 larvae, male to female ratio of 10.56: 1. Wuzhai black beans anti-soybean cyst nematode is its root resistance, anti-development and anti-proliferation of a variety of disease-resistant mechanisms combined results.