摘要
本文研究了小麦与秆锈菌３种典型类型非亲和性互作对秆锈菌生长发育的影响。结果表明，完全非亲和性互作ＩＳｒ５－Ｒａ／２１Ｃ３ＣＫＲ（Ｓｒ５／Ｐ５）使秆锈菌芽管生长方向与叶片长轴夹角显著变小，比对应的亲和性互作ＩＳｒ５－Ｓａ／２１Ｃ３ＣＫＲ（ｓｒ５／ｐ５）平均小６．２２°。高度非亲和性互作ＩＳｒ１１－Ｒａ／３４ＭＫＧ（Ｓｒ１１／Ｐ１１）使秆锈菌附着胞总分化率显著降低，接种后第１、２ｄ平均分别降低２１．１６％、３３．３７％，３种类型非亲和性互作对附着胞在气孔上的定位无影响。各类非亲和性互作对秆锈菌菌落扩展有不同程度极显著抑制作用。完全非亲和性互作、高度非亲和性互作及中度非亲和性互作ＩＳｒ６－Ｒａ／３４Ｃ２ＭＦＲ（Ｓｒ６／Ｐ６）侵染点寄主细胞坏死率分别为６６．７％～７６％、近１００％及５２．４％～８７．１％。
Abstract The effects of three
types of incompatible interactions between wheat and Puccinia graminis f.sp. tritici on the
growth and development of the fungus were studied. Completely incompatible interaction
ISr5-Ra/21C3CKR(Sr5/P5) reduced significantly (p=0.05) the angles between the growth direction
of germ tubes of P. graminis f.sp. tritici pathotype 21C3CKR and long axes of wheat leaves by
an average of 6.22, in comparison with its corresponding compatible interaction
ISr5-Sa/21C3CKR(sr5/p5). Highly incompatible interaction ISr11-Ra/34MKG(Sr11/P11) decreased
significantly the rate of appressorium differentiation of P. graminis f.sp.tritici pathotype 34MKG
by averages of 21.16% one day and 33.37% two days after inoculation. Three types of
incompatible interactions had no effect on location of appressoria on stomas. The spread of P.
graminis f.sp. tritici colonies was inhibited signifi
出处
《植物病理学报》
CAS
CSCD
北大核心
1999年第1期31-36,共6页
Acta Phytopathologica Sinica
基金
高等学校博士学科点专项科研基金
