Combining ability analysis of fruit yield and morphological traits in greenhouse cucumber (Cucumis sativusL.)

Abstract

-R. 2015. Combining ability analysis of fruit yield and morphological traits in greenhouse cucumber (Cucumis sativus L.). Can. J. Plant Sci. 95: 377Á385. Knowledge about the genetic control of the different quantitative characters related to fruit yield and its components is still insufficient in greenhouse cucumbers. This information is useful in planning breeding programs in this economically important crop. In this study, the genetics of morphological traits and fruit yield was investigated using a 9 )9 full diallel population of cucumbers for the greenhouse market. Data were collected on internode length, leaf length, leaf width, fruit length, fruit diameter, number of fruits per plant, yield per fruit and yield per plant. Variance components showed that both the additive and the dominant gene effects played significant roles in the genetic control of the traits studied. Genetic control of internode length, leaf width and number of fruits per plant was accomplished by additive effects. The significant mean squares of reciprocal crosses for all of the studied traits suggested that maternal inheritance also played an important role in the inheritance of these traits. Significant general combining ability for fruit yield revealed that both selection and hybridization methods would lead to desirable genetic improvements in cucumber through accumulation of desirable alleles from parents in the target genotype, but that hybridization would be preferred.Key words: Action, additive, diallel, dominance Golabadi, M., Golkar, P. et Eghtedary, A.-R. 2015. Analyse de l'aptitude a`la combinaison pour le rendement fruitier et les caracte`res morphologiques du concombre de serre (Cucumis sativus L.). Can. J. Plant Sci. 95: 377Á385. Nos connaissances sur le controˆle ge´ne´tique des diffe´rents caracte`res quantitatifs associe´s au rendement fruitier et a`ses e´le´ments laissent toujours ad e´sirer pour le concombre de serre. Or, de telles connaissances auraient leur utilite´pour planifier les programmes d'hybridation de cette culture importante pour l'e´conomie. Dans le cadre de cette e´tude, les chercheurs ont examine´la ge´ne´tique des caracte`res morphologiques et du rendement fruitier en recourant a`une population 9 )9 totalement dialle´le de concombres destine´s au marche´des le´gumes de serre. Les donne´es recueillies portaient sur la longueur des entrenaeuds, la longueur et la largeur des feuilles, le diame`tre des fruits, le nombre de fruits par plant, le rendement par fruit et le rendement par plant. Les composants de la variance indiquent que les effets des ge`nes additifs et dominants jouent un roˆle significatif dans le controˆle ge´ne´tique des caracte`res examine´s. La longueur des entrenaeuds, la largeur des feuilles et le nombre de fruits par plant sont ge´ne´tiquement controˆle´s par des effets additifs. La variance significative des croisements re´ciproques pour l'ensemble des caracte`res e´tudie´s laisse supposer que la transmission par la me`re joue aussi un roˆle important dans l'he´re´dite´de ces carac...

Combining Ability Studies on Cucumber and Snapmelon Hybrids

“…These hybrids also exhibited higher magnitude of economic heterosis with high mean performance. Similar findings for identification of superior parental lines, tester and hybrids based on GCA and SCA effects for fruit yield and morphological characters in cucumber were reported by Golabadi et al, (2015), Tasdighi and Baker (1981), Musmade et al, (1986) and Kumar et al, (2013) for yield and its components and for fruit texture by Yoshioka et al, (2010).…”

Combining ability study for yield and quality traits in cucumber (Cucumis sativus L.)

“…The cross L2xT3 exhibited a maximum positive significant SCA effect to yield associated traits among the twelve hybrid combinations and the same cross combination contributed a maximum positive significant effect for fruit yield per vine (0.67) also. Similar findings for identification of superior parental lines, tester and hybrids with GCA and SCA effects were reported for fruit yield traits by Golabadi et al (2015), Kumar et al (2013), Musmade and Kale (1986b) and Tasdighi and Baker (1981). Negatively significant cross combinations were found in L3xT4 (poor x poor), L1xT2 (average x good) and L2xT1 (good x poor) for days to first male flower anthesis, L3xT4 (average x poor) and L1xT2 (average x good) for days to first female flower anthesis and L3xT4 (average x poor), L2xT2 (average x good) and L1xT2 (average x good) for days to first harvest.…”

Diallel analysis in Citrullus mucosospermus (Fursa) for fruit traits

“…No studies were done about general and specific combining ability in C. mucosospermus. However, the works carried out on its sister C. lanatus and on another cucurbitaceae species have also emphasized the importance of both additive and non-additive gene action in the inheritance of many traits (Feyzian et al, 2009;Gvozdanović-Varga et al, 2011;Bahari et al, 2012;El-Tahawey et al, 2015: Golabadi et al, 2015Ogbu et al, 2016;Santos et al, 2017). The presence of both additive and non-additive gene actions in the expression of these traits suggests the use of reciprocal recurrent selection or Bi-parental mating for improving these traits (Jatoth et al, 2014).…”

“…Consequently, these genotypes could be a good parent for this trait in a breeding program designed to improve that trait (Zeinanloo et al, 2009;Nataša et al, 2014). In addition, high significant values of GCA for one trait reveals selection and hybridization methods would result in interesting genetic improvement for this trait thanks to desirable genes accumulation of two parents in the targeted genotype (Golabadi et al, 2015). However, lines with higher GCA effects can be used more effectively in the development of synthetic variety (Hemalatha et al, 2014).…”