Production and characterization of inter and intraspecific hybridization eggplant

Abstract

The eggplant is a highly valuable horticultural crop grown all over the world and it is of substantial economic importance in Asia. However, its production is severely threatened by several soil-borne and foliar diseases, insect-pests, drought, heat, and frost damage. Therefore, efforts to transfer useful resistance genes into eggplant from their wild relatives is important. In the present study, interspecific and intraspecific hybridization was carried out, that included three cultivated genotypes of eggplant (Solanum melongena MEE, Solanum melongena MEP, Solanum melongena MEB) and one wild Solanum species (Solanum incanum INC). The F1 hybrids were made by inter and intraspecific hybridization. A total of 632 possible inter and intraspecific reciprocal crosses was performed where only three were successful. The minimum days to flowering were observed in parent MEP, and maximum plant height was measured in MEE×MEB. Maximum fruit length was observed in parent MEB. Furthermore, fruit diameter, leaf width, leaf length, and fruit yield per plant were found maximum in hybrid MEExINC. Our results suggest that these materials will be of great interest for the genetic improvement of eggplant; they may have a tremendous potential to increase tolerance to abiotic stresses, such as to drought and heat, as well as increased nutrient and herbal values. Findings of this study will be helpful for the human health, ultimately contributing to the development of a new generation of plants adapted to climate.

Growth and antioxidant responses triggered by water stress in wild relatives of eggplant

“…450 species distributed worldwide (Knapp et al, 2013). Cultivated eggplant has limited genetic diversity, and this can be expanded by hybridisation with wild relatives, which represent an important source of variation (Daunay and Hazra, 2012;Ghani et al, 2020;Gramazio et al, 2019;Plazas et al, 2016;Rakha et al, 2020). Tolerance to abiotic and biotic stresses has been reported among eggplant wild relatives, and some of them are used for eggplant grafting (Gisbert et al, 2011;Khah et al, 2011;Rakha et al, 2020;Sabatino et al, 2018).…”

Obtención de híbridos de Portulaca umbraticola a través de cruzamientos convencionales

“…Sin embargo, en la hibridación intraespecífica, las barreras de incompatibilidad son menos rígidas, por lo que muchas veces se recurre a esta para generar variabilidad y obtener vigor híbrido. Este tipo de hibridación ocu-rre cuando se cruzan plantas de diferentes cultivares o distintos genotipos que pertenecen a una misma especie (Ghani et al, 2020, Víquez, 2010.…”

Development and use of introgression populations for the detection of QTL related to important agronomic traits in eggplant

“…Eggplant wild relatives have been found in a wide range of environmental conditions, including desertic areas and other highly stressful environments Plazas et al, 2020). Some of them are of great interest for breeding, in particular for traits related to adaptation to climate change but also pest and disease resistance (Tani et al, 2018;Ghani et al, 2020;Rakha et al, 2020;Kouassi et al, 2021;Plazas et al, 2019Plazas et al, , 2022. Although several efforts have been made to transfer these traits to cultivated eggplant, the use of wild relatives in eggplant breeding is still limited, and no commercial cultivar with traits introgressed from wild relatives have been released until now Boyaci, 2020).…”