Ocorrência De Nanismo Em Planta De Tomateiro Do Tipo Grape

Maciel, Gabriel Mascarenhas; Fernandes, Marco Aurélio Rocha

doi:10.1590/1983-21252015v28n429rc

Cited by 12 publications

(21 citation statements)

References 16 publications

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“…This occurred, as expected, because the dwarf lines have indeterminate growth Silva;Fernandes, 2015). According to the review done by Piotto and Peres (2012), the indeterminate growth habit is controlled by the dominant allele Self Pruning (SP), which has dominance among the others growth habits.…”

Section: Resultssupporting

confidence: 52%

“…All 16 experimental hybrids were obtained by crossing different normal lines [determinate (D), semi-determinate (SD) and indeterminate (I) growth habit] with dwarf lines (A) from the tomato germplasm bank at the Federal University of Uberlandia. The dwarf lines has fruit of intense red color, small (10g), and indeterminate growth habit Silva;Fernandes, 2015). The UFU-1502, UFU-1503, UFU-1504, UFU-1505, UFU-1506, UFU-1507 and UFU-1513 hybrids came from an SDxA cross; UFU-1509, UFU-1510, UFU-1511, UFU-1512 and UFU-1514 from IxA; and UFU-1516, UFU-1518, UFU-1519, UFU-1520 from DxA.…”

Section: Methodsmentioning

confidence: 99%

“…Nevertheless, there is currently no information on crossing dwarf homozygote lines with normal lines (determinate, semi-determinate and indeterminate), especially due to the divergence between these parents (dwarf versus normal) Silva;Fernandes, 2015). Moreover, assuming that a single allele can change the hybrid vigor of a tomato (Krieger;Lippman;Zamir, 2010), the study of other genes in heterozygosity (e.g.…”

Section: Finzi R R Et Almentioning

confidence: 99%

“…Few dwarf lines of mini-tomatoes with high Brix values are available for direct use in breeding Silva;Fernandes, 2015). Therefore, the objective of this study was to evaluate the agronomic performance of mini-tomato hybrids obtained by crossing dwarf lines with normal lines of indeterminate, determinate and semideterminate growth.…”

Section: Finzi R R Et Almentioning

confidence: 99%

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Agronomic performance of mini-tomato hybrids from dwarf lines

2017

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Little is known about the commercial potential of mini-tomato hybrids obtained from one dwarf parent. Thus, our objective was to evaluate the agronomic performance of mini-tomato hybrids obtained by crossing a dwarf line (A) with normal lines with indeterminate (I), determinate (D) and semi-determinate (SD) growth habits. The experiment was conducted in a greenhouse at the Estação Experimental de Hortaliças at the Universidade Federal de Uberlândia-UFU in Monte Carmelo, Brazil. The experiment was completely randomized with 17 treatments and four repetitions. The genetic material consisted of 16 experimental mini-tomato hybrids from the tomato germplasm bank at UFU, and a commercial hybrid (Mascot) as a control. The following variables were used to evaluate agronomic performance: fruit weight (g); number of fruits plant ; stem diameter (mm); distance between first bunch and soil (cm); internode length (cm) and total soluble solids (°Brix). The growth habit of the parents influenced the performance of the hybrids. In general, the mini-tomato hybrids from dwarf lines differed from the control with respect to all variables except number of fruits plant -1 , number of fruits bunch -1 and stem diameter. On average, hybrids from dwarf lines showed higher productivity (20%), shorter internodes (11%) and a shorter distance between the first bunch and the ground (30%), relative to the control. Using dwarf lines to obtain mini-tomato hybrids was shown to be viable since the hybrids demonstrated better agronomic performance.

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Section: Resultssupporting

confidence: 52%

Section: Methodsmentioning

confidence: 99%

Section: Finzi R R Et Almentioning

confidence: 99%

Section: Finzi R R Et Almentioning

confidence: 99%

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Agronomic performance of mini-tomato hybrids from dwarf lines

2017

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“…The UFU-1241E, UFU-42G, and UFU-451G genotypes are characterized by a normal phenotype with determined, semideterminate and indeterminate growth habit, respectively. The UFU-72152F genotype is characterized by presenting atypical phenotype, having dwarf size and indeterminate growth (MACIEL et al, 2015b).…”

Section: Methodsmentioning

confidence: 99%

Growth habit in mini tomato hybrids from a dwarf line

2017

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ABSTRACT:The growth habit directly influences the tomato architecture, impacting on agronomic performance of mini-tomato hybrids. However, little is known about the growth habit of mini-tomatoes hybrids obtained by the crossing of dwarf lines versus normal lines with different growth habits. The objective of this study was to determine the type of growth that occurs when crossing a mini-tomato dwarf line versus normal phenotype lines with indeterminate, determined and semi-determinate growth habit. The methodology consisted of biparental crosses [determined from a cross between a dwarf line with normal lines of different growth habits (determinate, semi-determinate and indeterminate)] and reciprocal backcrosses of the F1 to the parents [normal lines (P 1 ) and dwarf line (P 2 )], and obtained the F2 generation. Was evaluated phenotypically the growth habit in each generation. The growth habit proportions of F 1 (P 1 xP 2 ), F1 (P 2 xP 1 ), F 2 , F 1 RC 1 (P 1 ) and F 1 RC 1 (P 2 ), were classified after checking the expected and observed frequencies using the χ² test (F= 0.05). Was concluded that, when the determined and semi-determined growth habits are used as parents to produce hybrids, in F 2 population growth habits shows 3:1 type segregation. Futhermore, regardless of the normal parent growth habit, the hybrids (F 1 ) always will show indeterminate growth when they are crossed with the mini-tomato dwarf line of this study.

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