Omar Ghady E, Mazrou Yasser S A, El-Kazzaz Mohammad K, Ghoniem Kamal E, Ashmawy Mammduh A, Emeran Amero A, Mabrouk Ola I, Nehela Yasser
Agricultural Research Center, Wheat Diseases Research Department, Plant Pathology Research Institute, Giza 12619, Egypt.
Business Administration Department, Community College, King Khalid University, Guraiger, Abha 62529, Saudi Arabia.
Plants (Basel). 2021 Oct 22;10(11):2262. doi: 10.3390/plants10112262.
Adult plant resistance in wheat is an achievement of the breeding objective because of its durability in comparison with race-specific resistance. Partial resistance to wheat stripe rust disease was evaluated under greenhouse and field conditions during the period from 2016 to 2021. Misr 3, Sakha 95, and Giza 171 were the highest effective wheat genotypes against f. sp. races. Under greenhouse genotypes, Sakha 94, Giza 168, and Shandaweel1 were moderately susceptible, had the longest latent period and lowest values of the length of stripes and infection frequency at the adult stage. Partial resistance levels under field conditions were assessed, genotypes Sakha 94, Giza 168, and Shandaweel1 exhibited partial resistance against the disease. Leaf tip necrosis (LTN) was noted positively in three genotypes Sakha 94, Sakha 95, and Shandaweel1. Molecular analyses of were performed for , , and markers. Only Sakha 94 and Shandaweel1 proved to carry the resistance allele at both phenotypic and genotypic levels. Scanning electron microscopy (SEM) observed that the susceptible genotypes were colonized extensively on leaves, but on the slow-rusting genotype, the pustules were much less in number, diminutive, and poorly sporulation, which is similar to the pustule of NIL Jupateco73 'R'.
与小种专化抗性相比，小麦成株抗性具有持久性，是育种目标的一项成果。2016年至2021年期间，在温室和田间条件下对小麦条锈病的部分抗性进行了评估。Misr 3、Sakha 95和Giza 171是对f. sp. 小种最有效的小麦基因型。在温室基因型中，Sakha 94、Giza 168和Shandaweel1中度感病，潜育期最长，成株期条长和侵染频率值最低。评估了田间条件下的部分抗性水平，基因型Sakha 94、Giza 168和Shandaweel1对该病表现出部分抗性。在Sakha 94、Sakha 95和Shandaweel1这三个基因型中均观察到叶尖坏死（LTN）呈阳性。对、和标记进行了分子分析。只有Sakha 94和Shandaweel1在表型和基因型水平上均被证明携带抗性等位基因。扫描电子显微镜（SEM）观察到，感病基因型在叶片上大量定殖，但在慢锈基因型上，脓疱数量少得多，体积小，产孢不良，这与近等基因系Jupateco73 'R'的脓疱相似。
