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It is resistant to powdery mildew [4] and crown rot. [5] In 1962 the first successful cross of a wild Cucurbita with a domesticated Cucurbita occurred. In that study by Whitaker, C. lundelliana was mostly dominant in a cross with Cucurbita moschata. The purpose of the study was to find the ancestral plant species of the domesticated Cucurbita.
The Pm3 allele is an effective genetic resistance strategy that protects host species against powdery mildew fungus. [ 23 ] In 2014, resistance was induced in hexaploid bread wheat to powdery mildew via targeted mutations with the use of CRISPR and TALENS gene-editing technology.
Although susceptible plants can increase callose and lignin deposits in response to infection, the hypersensitive response is only found in resistant varieties. Finally, although powdery mildew can grow in a relatively hot and dry environment compared to downy mildew, conidia production peaks at temperatures of approximately 20 °C.
Mildew locus o (MLO) is a plant-specific gene family. Specific members of the M ildew L ocus O gene family act as powdery mildew susceptibility factors. Their inactivation, as the result of a loss-of-function mutation, gene knock-out, or knock-down, is associated with a peculiar form of resistance, referred to as mlo resistance.
It is more tolerant to some common summer squash pests, including squash vine borer, [2] squash bugs, [2] and powdery mildew, than the more commonly grown, bushy, C. pepo summer squash cultivars. [2] The plants are slower to start producing than some C. pepo types. [2]
The good news for the milkvetch plant is that they usually need wildfire to sprout — meaning dormant seeds now have a massive new habitat for a new crop of the rare shrub.
Podosphaera fuliginea (also known as Podosphaera xanthii) is a plant pathogen that causes powdery mildew on cucurbits. Podosphaera fuliginea and Erysiphe cichoracearum are the two most commonly recorded fungi causing cucurbit powdery mildew.
It is resistant to many diseases of cultivated Cucurbita species, [6] and has been used to breed resistance to several diseases into common squashes. [7] For example, researchers at Cornell University used Cucurbita ecuadorensis to breed resistance to papaya ringspot virus , watermelon mosaic virus , and powdery mildew , into common Cucurbita ...