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C. argyrosperma has ovate-cordate (egg-shaped to heart-shaped) leaves. The shape of C. pepo leaves varies widely. C. moschata plants can have light or dense pubescence. C. ficifolia leaves are slightly angular and have light pubescence. The leaves of all four of these species may or may not have white spots. [8]
This mycelial layer may quickly spread to cover all of the leaves. The lower leaves are the most affected, but the mildew can appear on any above-ground part of the plant. As the disease progresses, the spots get larger and denser as large numbers of asexual spores are formed, and the mildew may spread up and down the length of the plant.
This list of gourds and squashes provides an alphabetical list of (mostly edible) varieties of the plant genus Cucurbita, commonly called gourds, squashes, pumpkins and zucchinis/courgettes. Common names can differ by location. The varieties included below are members of the following species: C. argyrosperma; C. ficifolia
Leaves are exstipulate, alternate, simple palmately lobed or palmately compound. The flowers are unisexual , with male and female flowers on different plants ( dioecious ) or on the same plant ( monoecious ).
Zucchini yellow mosaic virus (ZYMV) is an aphid-borne potyvirus, regarded as a major pathogen of cucurbits in most regions of the world where these crops are cultivated. ZYMV affects all cucurbits including pumpkins , squashes , [ 1 ] vegetable marrows , courgettes , melons , watermelons , cucumbers , gherkins and various gourds especially ...
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Cucurbita pepo is a cultivated plant of the genus Cucurbita.It yields varieties of winter squash and pumpkin, but the most widespread varieties belong to the subspecies Cucurbita pepo subsp. pepo, called summer squash.
Diseased leaves can usually be identified soon after they emerge from the bud, due to their red color and twisted shape. As the leaves develop, they become increasingly distorted, and ultimately thick and rubbery compared to normal leaves. The color of the leaves changes from the normal green to red and purple, until a whitish bloom covers each ...