The Genotype-Environment Interaction With Using Genes Nor, Rin and Alc

Ignatova, S. I.; Garanko, I.B.; Botyaeva, G.V.

doi:10.17660/actahortic.1999.487.59

Cited by 4 publications

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“…These genes include slow ripening alcobaca (alc), ripening inhibitor (rin) and non-ripening (nor) mutants (Almeida 1961;Robinson and Tomes 1968;Tigchelaar et al 1973). These alleles are helpful in extending the fruit availability period of tomato in North Indian plains by first delaying the ripening of the fruits on the plant (Simpson et al 1976;Kopeliovitch et al 1980;McGlasson et al 1983;Mutschler 1984;Nguyen et al 1991;Dhatt 2001;Garg 2006) and then by storing them at room temperature or in controlled conditions (Mutschler et al 1992;Agar et al 1994;Lu et al 1995;Ignatova et al 1999;Kitagawa et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Genetics of yield, quality and shelf life characteristics in tomato under normal and late planting conditions

2007

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Seventy nine genotypes of tomato (15 lines, four testers and their 60 F 1 hybrids produced in line · tester fashion) were evaluated under normal (E 1 ) and late planting (E 2 ) conditions in the Department of Vegetable Crops, Punjab Agricultural University, Ludhiana, India, to determine the nature of gene action controlling yield, quality and shelf life characteristics and to identify a few good combiner genotypes which may be used in further breeding programmes to extend the fruit availability period of tomato in North Indian plains. The lines were significantly different from testers for most of the characters thereby justifying the choice of testers. Additive gene action was predominant for days to ripening, total yield per plant, marketable yield per plant, number of fruits per plant, average fruit weight, fruit shape index and lycopene in both the environments, whereas non-additive genetic variance predominated in controlling firmness index, number of locules, pericarp thickness, alcohol insoluble solids (AIS), dry matter, total soluble solids (TSS), titratable acidity, TSS:Acid ratio, pH, ascorbic acid and shelf life, under both normal and late planting conditions. The best general combining ability (gca) effects, among females, in respect of yield per plant were shown by Spectrum in E 1 and by LT-42 in E 2 . Among the testers, the best gca values in both the environments were possessed by nor-RM-1 for total yield per plant, marketable yield per plant, number of fruits per plant, dry matter and TSS; by rin-RM-2 for firmness index, pericarp thickness and alcohol insoluble solids; by alc-IIHR-2050 for average fruit weight, number of locules and shelf life and by alc-IIHR-2052 for lycopene. The gca of ripening mutants had a nice consonance with their per se performance for most of the characters indicating that additive gene action was operative in these mutants for majority of the traits.

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Section: Introductionmentioning

confidence: 99%

Genetics of yield, quality and shelf life characteristics in tomato under normal and late planting conditions

2007

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“…Alcobaca genes in its homozygous form is noted to obstruct or significantly slow down a wide range of processes associated with ripening of tomato fruit leading to a noticeably extended shelf life (Kopeliovitch et al, 1979;Lobo et al, 1984;Mutschler, 1984b;Tigchelaar and Rios, 1989;Lu et al, 1995;Ignatova et al, 1999;Dhatt, 2001;Garg, 2006) but inferior flavour (Kopeliovitch et al, 1980(Kopeliovitch et al, , 1982 and poor colour development (Sink et al, 1974;Kopeliovitch et al, 1980;Lobo et al, 1984). However, in plants heterozygous for these alleles, several ripening characteristics exhibit levels intermediate between those of the wild and mutant parents and produce fruits having shelf life many times greater than normal cultivars (Kopeliovitch et al, 1979;Mutschler et al, 1992;Dhatt, 2001;Kitagawa et al, 2005;Garg, 2006), besides developing acceptable colour (Kopelivitch et al, 1981;Mutschler, 1984b;Gavrish and Korol, 1991) and flavour attributes (Kopeliovitch et al, 1982;Agar et al, 1994).…”

Section: Characteristic Expression and Effects Of Rin Nor And Alcmentioning

confidence: 99%

An overview of tomato fruit-ripening mutants and their use in increasing shelf life of tomato fruits

Osei¹,

Danquah²,

Blay³

et al. 2017

Afr. J. Agric. Res.

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The potential of tomato ripening mutants; rin, nor, alc, nr, gr, etc to prolong the shelf life of tomato cannot be overemphasized. Ripening mutants have gained a considerable attention in the last few years to extend shelf life. They have been characterized and examined for their potential utilization in lengthening shelf life of tomatoes. Mutant genes are therefore available to extend the shelf-life of tomato via breeding. These single recessive gene mutants mostly modify ethylene's downstream effects on specific biochemical processes related to fruit ripening. The fruits of these mutants are characterized by an absence of a ripening-associated ethylene burst and failure to ripen in the presence of exogenous ethylene. They are useful in research and breeding of cultivated tomatoes for postharvest quality. The effect is more pronounced in homozygotes where fruits do not develop normal colour. However, in the heterozygous form, several ripening characteristics exhibit levels that are intermediate between those of the wild and mutant parents and are able to produce fruits that have high shelf life than normal cultivars. Their discoveries have generated insights into ripening control and created new understanding of the primary ripening control mechanisms. Nonetheless, some scientists have argued that these mutant genes produce undesirable pleiotropic effects on other components of fruit quality. This is true in the homozygotes state, however in the heterozygote form, they develop acceptable colour for marketing, ripe naturally and exhibit extended shelf life too. Hence this offers an opportunity to exploit these genes to regulate tomato supply for longer period.

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Genotype × Environment Interactions for Shelf Life and Yield Attributes in Tomato Hybrids Heterozygous atrin, nor, oralcLoci

Garg

Cheema

2008

Journal of Crop Improvement

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The Genotype-Environment Interaction With Using Genes Nor, Rin and Alc

Cited by 4 publications

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Genetics of yield, quality and shelf life characteristics in tomato under normal and late planting conditions

Genetics of yield, quality and shelf life characteristics in tomato under normal and late planting conditions

An overview of tomato fruit-ripening mutants and their use in increasing shelf life of tomato fruits

Genotype × Environment Interactions for Shelf Life and Yield Attributes in Tomato Hybrids Heterozygous atrin, nor, oralcLoci

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