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КНИЖНЫЙ МИР

DURABLE RESISTANCE AGAINST STRIPE RUST (Puccinia striiformis) IN WHEAT   Naimat Ullah and A. S. Mumtaz

DURABLE RESISTANCE AGAINST STRIPE RUST (Puccinia striiformis) IN WHEAT

60 страниц. 2011 год.
LAP Lambert Academic Publishing
Stripe rust is an important foliar disease of Wheat in different wheat growing areas in Pakistan. Different protective measures such as fungicides, cultural or agronomic practices do not ensure long- lasting control.Genetic resistance is preferred over other strategies.Of the genetic resistance, durable resistance (race-nonspecific) is considered a sustainable measure globally. Our study included seedling testing, field evaluation, morphological marker studies and marker assisted selection.Study revealed that 4% varieties were resistant at seedling stage while rest were susceptible or intermediate.Field testing revealed that 4%varieties were resistant,70% were intermediate or moderately resistant while others were highly susceptible.For further validation,morphological markers were also observed in varieties indicating presence of gene Yr18/Lr34. Marker assisted selection of varieties revealed that 11 varieties possessed the desirable marker.Same varieties showed...
 
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