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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Parthenocarpic potential in Capsicum annuum L. is enhanced by carpelloid structures and controlled by a single recessive gene | BMC Plant Biology Parthenocarpic potential in Capsicum annuum L. is enhanced by carpelloid structures and controlled by a single recessive gene Tiwari et al. Tiwari et al. BMC Plant Biology 2011 11 143 http www.biomedcentral.com 1471-2229 11 143 21 October 2011 BioMed Central Tiwari et al. BMC Plant Biology 2011 11 143 http www.biomedcentral.com 1471 -2229 11 143 BMC Plant Biology RESEARCH ARTICLE Open Access Parthenocarpic potential in Capsicum annuum L. is enhanced by carpelloid structures and controlled by a single recessive gene 1 2.5 3 2 4 2 Aparna Tiwari Adam Vivian-Smith Roeland E Voorrips Myckel EJ Habets Lin B Xue Remko Offringa and Ep Heuvelink 1 Abstract Background Parthenocarpy is a desirable trait in Capsicum annuum production because it improves fruit quality and results in a more regular fruit set. Previously we identified several C. annuum genotypes that already show a certain level of parthenocarpy and the seedless fruits obtained from these genotypes often contain carpel-like structures. In the Arabidopsis bell mutant ovule integuments are transformed into carpels and we therefore carefully studied ovule development in C. annuum and correlated aberrant ovule development and carpelloid transformation with parthenocarpic fruit set. Results We identified several additional C. annuum genotypes with a certain level of parthenocarpy and confirmed a positive correlation between parthenocarpic potential and the development of carpelloid structures. Investigations into the source of these carpel-like structures showed that while the majority of the ovules in C. annuum gynoecia are unitegmic and anatropous several abnormal ovules were observed abundant at the top and base of the placenta with altered integument growth. Abnormal ovule primordia arose from the placenta and most likely transformed into carpelloid structures in analogy to the Arabidopsis bell mutant. When pollination was present fruit weight was positively correlated with seed number but in the
