PLANT CELL BIOTECHNOLOGY AND MOLECULAR BIOLOGY

Breeding practices' historical development and the slow shift from traditional hybridization and selection techniques to marker-assisted breeding and molecular genetics are covered in the first section of the paper. It also looks at how omics technologies, like as proteomics, metabolomics, transcriptomics, and genomes, have been integrated to speed up precision breeding and transform trait discovery. Particularly in vegetatively propagated crops, advances in tissue culture, somaclonal variety, doubled haploids, and embryo rescue are emphasized for their roles in facilitating the quick multiplication and fixation of desired features. As a major source of income, rural employment, and human nourishment, horticultural crops are essential to world agriculture. However, genetic complexity, lengthy breeding cycles, and biotic and abiotic stressors usually limit their productivity and quality. Using both traditional and contemporary breeding methods, horticulture crops have seen tremendous genetic advancement in recent decades. The developments in genetic plant breeding and their uses to improve horticulture crops' production, quality, stress tolerance, and adaptability are thoroughly examined in this review. The recent development of genome editing technologies like CRISPR/Cas9, which provide unmatched precision in altering target genes and are being utilized more frequently to enhance disease resistance, shelf life, and nutritional value, is given a lot of attention. The research also looks at how data-driven platforms, artificial intelligence, and speed breeding might help overcome constraints like unpredictable environmental conditions and lengthy generation durations. Even with these technological developments, issues like heterozygosity, limited genetic diversity, and regulatory restrictions continue to be significant. Case studies from important crops, including tomato, banana, grape, apple, and brinjal, are shown at the end of the paper to demonstrate how breeding techniques can be applied successfully. It highlights the necessity of interdisciplinary cooperation and supportive policies while outlining potential future developments, such as climate-smart breeding and participatory techniques.