摘要
鉴定结果表明,亚洲稻区害虫的生物型,褐飞虱有5种;白背飞虱有2种;黑尾叶蝉有3种;稻瘿蚊至少有4种。抗性遗传定位分析结果,抗褐飞虱的8ph_1和Bph_2定位于第11染色体上,并紧密连锁;位于第7染色体上的Bpb_3和bph_4紧密连锁。用抗白背飞虱品种与不抗虫品种杂交结果,发现所有供试品种的抗性基因与Wbph_1非等位且独立。抗黑尾叶蝉各供试品种的抗性基因Glh_1、Glh_2、Glh_3、Gih_4、Glh_5、Glh_6、Glh_7相互独立遗传,仅Plh_8品种有2个抗性基因。在自然接种条件下研究了5个抗稻瘿蚊品种的遗传,发现它们都具有单一抗性基因。
In this thesis,the writer analyse various biotype and new biotype differentiation which may exit about the main pest of Asian rice area ,including brown plant hopper, white backed plant hooper, rice gall midge, green paddy leaf hopper. He introduce the named resistant gene. and new excellent resistant material to the pest. He point out,when you have abundant material about resistant breeding to pest, you must know the resistant genetics and gene of the specific material, combined with the biotype of the different pests,you can make a clear distinction about your purpose and solve some problem of resistant breeding to pest in certin ecologial area.
出处
《西北农业学报》
CAS
CSCD
1993年第3期73-75,共3页
Acta Agriculturae Boreali-occidentalis Sinica
关键词
水稻
遗传
抗虫性
虫害
Rice
Resistant genetics
Resistant breeding
