Development and assessment of biotic stress tolerant cucumber hybrids using land races and commercial varieties
2023
Kumari, Reena | Ramesh Kumar | Rajeev Kumar | Aanchal Chauhan | Kumari Shiwani
Cucumber growers suffer significant economic losses due to yield reductions caused by pests such asfruit flies and diseases like powdery mildew and downy mildew. Therefore, one of the most effective ways toreduce losses caused by these pressures is to grow resistant cultivars. This study aimed to estimate importantgenetic parameters to approximate inbred line performance in the F1 generation and identify appropriate F1cross combinations resistant to these biotic stresses. Thirty F1 hybrid combinations were screened, alongwith 13 parents (ten diverse stable lines and three testers) and a standard check. The genotypes UHF-CUC-11,UHF-CUC-13, UHF-CUC-6, UHF-CUC-15, UHF-CUC-8, Solan Srijan and F1 cross-combinations UHF-CUC-11× Solan Srijan, UHF-CUC-13 × Solan Srijan, UHF-CUC-6 × K-75, UHF-CUC-15 × Solan Srijan and UHF-CUC-8× Solan Srijan were found superior for these biotic stresses in the experimental results. Additionally, thepredominance of non-additive gene activity due to genetic complementation between parents suggests thatheterosis breeding could help enhance important biotic stress tolerance in cucumbers. The resistant genotypesand hybrid combinations identified in the current research can be employed to integrate the resistant genesinto the preferred elite backgrounds of cucumber to develop bio tic stress-resistant varieties/hybrids
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