Selection of Eggplant Genotypes Tolerant to High Temperatures

Valadares, Ricardo de Normandes; Nóbrega, Danieli Andrade; Moreira, Carolina da Silva; Silva, Jordana Antônia dos Santos; Mendes, Adônis Queiroz; Silva, Fabian Santana; Costa, Ítalo Jhonny Nunes; Menezes, Dimas

doi:10.9734/jeai/2019/v31i130064

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…G r o u p 3 i n c l u d e d o n l y t h e Ajmurasaki F1 genotype with the second longest fruit length among the evaluated genotypes (28.35 cm), smallest fruit width (2.83 cm) and highest fruit length/width ratio (9.96). (Table 1), similar to those reported by Valadares et al (2019b). The fruits showed uniform purple coloration, snake-shaped curvature and no thorns in the fruit cup (Table 1).…”

Section: Resultssupporting

confidence: 86%

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Genetic divergence among eggplant genotypes under high temperatures

et al. 2019

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The aim of this study was to estimate the genetic divergence among eggplant genotypes for agronomic traits in order to gather information for the selection of genotypes in eggplant breeding programs for tolerance to high temperatures. Ten traits recommended by the International Board for Plant Genetic Resources were analyzed in 24 genotypes, arranged in a randomized complete block design with four replicates. Data were submitted to analysis of variance (P<0.01) and later to the UPGMA and Tocher grouping methods, using the generalized Mahalanobis distance (D2) as dissimilarity measure. Three and six groups of similarity were obtained, respectively, for the multivariate techniques used, UPGMA and Tocher, with concordance in the grouping of 87.50% of the genotypes. The characters fruit length (34.71%), fruit width (35.96%) and fruit length/width ratio (14.08%) were the main contributors to genetic divergence, explaining 90.72% of total genetic dissimilarity. The genotypes presented considerable genetic variability for all agronomic traits analyzed and can be used in eggplant genetic breeding programs for high temperatures.

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Section: Resultssupporting

confidence: 86%

“…For fruit width, the average was 5.84 cm, with values between 3.64 (CNPH 84) and 8.55 cm (CNPH 135), reflecting in the length/width ratio of the fruit, which was between 1.48 (CNPH 668) and 4.91 (CNPH 84) with a mean of 2.59 (Table 1). Results similar to those were reported by Valadares et al (2019b).…”

Section: Methodssupporting

confidence: 92%

Genetic divergence among eggplant genotypes under high temperatures

et al. 2019

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“…Eggplant is severely affected by weather conditions . The plant productivity is drastically reduced when the temperature reached 36°C (Valadares et al, 2019). In contrast, the plant is sensitive to frost and the growth of young plants may be restrict when temperatures are below 16ºC.…”

Section: Introductionmentioning

confidence: 99%

“…To get the highest yield of eggplant with high quality, many researchers evaluated the performance of many cultivars under different environments (Tripathy et al, 2017;Suleiman, 2020;Uddin et al, 2021). Great efforts have been conducted to select some varieties adapted to thermal conditions (Valadares et al, 2019;Santhiya et al, 2019;Sangam et al, 2020). At low temperature periods, many countries grew eggplant under unheated plastic tunnels, greenhouses and heated tunnels which causing high in selling prices such as Poland (Caruso et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Performance of some spherical eggplant hybrids under plastic house and open field conditions

Sayed¹,

Mahmoud²

2022

Scientific Journal of Agricultural Sciences

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Two experiments were conducted during the two winter seasons of 2018/2019 and 2019/2020 at the Agricultural Experimental Station of Faculty of Agriculture Cairo University Giza to investigate the response of four spherical F1 cultivars (Sawad El Laiel, Petra, Amedo and Black Berry) of eggplant (Solanum melongena L.) under two different production systems (open field and plastic house), consider the vegetative growth, fruit quality and yield. Plants grown in open field had higher values of number of branches, early and total yield, fruit weight, fruit diameter, fruit total carbohydrate, vitamin C, macro and micro elements and significant increase in leaf dry matter, leaf concentrations of macro and microelements compared with plastic house production. Reversely, planting in plastic house significantly increased plant height, leaf area and fruit dry matter compared with planting in open field. The period from transplanting to first harvest was shorter in plants grown in open field than those grown in plastic house. Meanwhile, there were no significant differences between production systems in leaf chlorophyll, fruit length, fruit contents of TSS, Ca, Mg, niacin and omega3 in both seasons. The analysis showed significant differences among the different eggplant cultivars for all traits. Sawad El Laiel' recorded the highest value of early and total yield, average fruit weight, total carbohydrate, TSS and leaf concentrations of K, Ca and B. On the other hand, 'Amedo' significantly exceeded all other cultivars in chlorophyll reading and leaf concentrations of N, P, Mg, Fe, Mn and Zn as well as fruit diameter, fruit concentrations of N, P, K, Ca, Mg, Fe, Mn, Zn, vitamin C, niacin (B3) Omega 3 and dry matter. 'Petra' was the earliest cultivar, while the 'Black Berry' was the latest one. The interaction between cultivars and production systems had significantly influence on all traits under study.

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Adaptability and stability of eggplant submitted to different levels of shading via REML/BLUP

et al. 2022

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This study aimed to evaluate the eggplant genotype x environment ineraction, using the REML/BLUP procedure, in order to identify genotypes with high productivity, adaptability and phenotypic stability. The experiments were carried out in agricultural greenhouses, in two seasons, with three types of shading: uncovered (UC); covered with plastic diffuser film (PD), 130 microns thick, covered with plastic diffuser film (130 micron) + 50% shading screen (SS). Twelve eggplant genotypes were evaluated, with four replicates and an experimental plot consisting of four plants. The traits evaluated in this study were: fruit set index, number of fruits per plant, average production of fruits/plant and in vitro pollen viability. To assess the adaptability and stability of the genotypes, statistical analyzes and estimation of genetic parameters were performed using the mixed-models of REML/BLUP type, with the aid of SELEGEN software and the statistical model 51. According to the results obtained, the authors verified an agreement between the three methods: Relative Performance of Genetic Values (PRVG), Harmonic Average of Genotypic Values (MHVG) and Harmonic Mean of Relative Performance of Genetic Values (MHPRVG) for average fruits production per plant (PP), number of fruits per plant (NF) and in vitro pollen viability (IVPV), showing the high degree of agreement in the ordering of materials. Thus, it is possible to indicate that the genotypes with the best productive performance, adaptability and stability in the evaluated environments were CNPH135×CNPH60, CNPH135×CNPH51, CNPH135×CNPH141, CNPH109, CNPH109×CNPH60 and CNPH109×CNPH141.

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Selection of Eggplant Genotypes Tolerant to High Temperatures

Cited by 4 publications

References 2 publications

Genetic divergence among eggplant genotypes under high temperatures

Genetic divergence among eggplant genotypes under high temperatures

Performance of some spherical eggplant hybrids under plastic house and open field conditions

Adaptability and stability of eggplant submitted to different levels of shading via REML/BLUP

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