![]() ![]() Therefore, development of parthenocarpy or production of fruits without seeds is desirable for cucumber breeding. Moreover, parthenocarpic fruits are often firmer and fleshier than their seeded counterparts 5. Seedless fruits are favoured by breeders, cultivators as well as consumers. The production of parthenocarpic fruits is an attractive technique for the development of seedless fruits independent of pollination. ![]() Breeders have considered parthenocarpy as a trait to overcome the problem of poor fruit setting caused by unfavourable pollinating conditions 4. The yield of cucumber is reduced by either absence of pollinators or under unsuitable environmental conditions, such as diffused light, high humidity and temperature 3. Being a predominantly monoecious crop, a successful fruit set in cucumber depends on conditions favourable to fertilization. The results revealed that homologs CsWD40 and CsPIN-4 could be considered potential genes for determination of parthenocarpy as these genes showed parental polymorphism and differential gene expression in case of parthenocarpic and non-parthenocarpic parents.Ĭucumber ( Cucumis sativus L.) belongs to the botanical family Cucurbitaceae that also includes several other economically important crops (cucurbits) such as melon ( Cucumis melo L.), watermelon ( Citrullus lanatus L.), squash/pumpkin ( Cucurbita spp.), bitter gourd ( Momordica charantia L.) and bottle gourd ( Lagenaria siceraria L.) 1, 2. Quantitative real-time PCR of selected genes was conducted in five cucumber lines with varying degrees of parthenocarpic fruit set capacities, which revealed possible association of their expression with parthenocarpy. SSR genotyping identified three SSRs in two polymorphic genes. Simple sequence repeat (SSR) sequences were mined in these PRGs, and 31 SSR markers were designed. ![]() An in silico analysis was performed on phylogenetic tree, exon–intron structure, cis-regulatory elements in the promoter region, and conserved domains of their deduced proteins, which provided insights into the genetic make-up of parthenocarpy-related genes in cucumber. Thirty-five PRG homologs were identified in the cucumber genome via homology-based search. In this study, we retrieved thirty five parthenocarpy fruit-set related genes (PRGs) from bibliomic data in various plants. Although parthenocarpic cucumber has been widely used in commercial production for a long time its genetic basis is not well understood. So far, a limited number of genes regulating parthenocarpic fruit set have been reported in several fruit or vegetable crops, most of which are involved in hormone biosynthesis or signalling. The seedlessness occurs when fruit develops without fertilization which can be either natural or induced. Parthenocarpy is an ideal trait for many fruit and vegetables which produces seedless fruit desired by consumers. Cucumber ( Cucumis sativus L.), a major horticultural crop, in the family Cucurbitaceae is grown and consumed globally. ![]()
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