Tomato Fruit Quality and Shelf Life in Hybrids Heterozygous for the alc Ripening Mutant

Mutschler, Martha A.; Wolfe, David W.; Cobb, Edward D.; Yourstone, K.S.

doi:10.21273/hortsci.27.4.352

Cited by 44 publications

(26 citation statements)

References 10 publications

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“…Our results also show that variables related to fruit size (fruit weight, width, length, and number of locules) (Table 4) are negatively correlated with shelf life; in other words, the combination of alc with small fruit size results in longer shelf life. These results are in agreement with other reported data on germplasm with the alc mutant such as the short shelf life in fruits over 180 g (Mutschler et al 1992) and the long shelf life in fruits of about 69 g (Leal and Tabim 1974).…”

Section: Discussionsupporting

confidence: 93%

“…Shelf life also varies widely in other materials carrying the alc mutation described in literature, with reported shelf life ranging from low (32.9 days (Mutschler 1984b), 29.0 days (Mutschler et al 1988), and 10.1-26.8 days (Mutschler et al 1992)) to very high (287-316 days (Leal and Tabim 1974)). Our results also show that variables related to fruit size (fruit weight, width, length, and number of locules) (Table 4) are negatively correlated with shelf life; in other words, the combination of alc with small fruit size results in longer shelf life.…”

Section: Discussionmentioning

confidence: 99%

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Genetic basis of long shelf life and variability into Penjar tomato

Casals

Pascual

Cañizares

et al. 2011

Genet Resour Crop Evol

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Penjar tomato is a varietal type cultivated in northeast Spain that characteristically has a long shelf life, small fruit, and wide morphological variability among cultivars. To determine the genetic basis for the long shelf life in the Penjar varietal type and to describe the genetic background and agromorphologic characteristics of the group, we studied 27 Penjar accessions representative of the entire range of variation in traits related to agronomic behavior, fruit morphology, and sensory quality. We found that the long shelf life of Penjar (mean: 126.8 days) is due to the ripening mutant alcobaça (alc), and the molecular basis of this mutation is the replacement of thymine by adenine in position 317 of the coding sequence of the NAC.NOR gene; thus, alcobaça (alc) is an allele of non-ripening (nor). The amplified fragment length polymorphism (AFLP) study found 18.07% polymorphic loci within the Penjar varietal type, which is higher than usual in landraces. The variation in agronomic and morphologic traits between accessions was also very high; thus, the heterogeneity of the Penjar group probably results from the introduction of the allele alc in distinct landraces. Our results also show that in germplasm containing the alc mutation shelf life is negatively correlated with fruit size (weight, width, length, and number of locules); thus, the predominance of small fruit within the varietal type is probably the result of this trait being dragged along in the selection for long shelf life.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Genetic basis of long shelf life and variability into Penjar tomato

Casals

Pascual

Cañizares

et al. 2011

Genet Resour Crop Evol

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“…According to Zamir (2001) transgenic technologies in plant breeding should be applied only in those cases in which classical genetic alternatives are not available. In S. lycopersicum, some mutant genes such as rin (ripening inhibitor), nor (non-ripening), Nr (Never ripe), and alc (alcobaca) not only delay the normal process of ripening, but also have undesirable pleiotropic effects on other components of fruit quality (Kovacs et al 2009;Matas et al 2009;Mutschler et al 1992; Thompson et al 1999;Tigchelaar et al 1978). The nor gene is a transcription factor upstream of ethylene control that typically produces non-climateric fruits (Moore et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Inheritance of shelf life and other quality traits of tomato fruit estimated from F1’s, F2’s and backcross generations derived from standard cultivar, nor homozygote and wild cherry tomato

et al. 2010

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A tomato cultivar with high quality fruit and a long shelf life is a main goal in tomato breeding and it would be achieved using wild germplasm. The objective of this work was to explore the inheritance for fruit quality traits, especially fruit shelf life, in three tomato crosses using a standard Argentinean cultivar (Ca, cv 'Caimanta'), a ripening mutant (nor, homozygous for the nor gene) of Solanum lycopersicum, and a wild cherry type (Ce, LA1385 of S. lycopersicum var. cerasiforme). The wild parent had a shorter fruit shelf life than the mutant genotype but higher than Ca. When the Ce genotype was analyzed in hybrid combination, the F 1 (Ca9Ce) was similar to the wild genotype for shelf life whereas the F 1 (nor 9 Ce) had a longer shelf life. Both F 1 crosses and backcrosses to the cherry type genotype had significantly lower fruit weight than the cultivated genotypes but higher than the cherry type parent. In the F 2 analysis, it was found that the inheritance underlying quality traits is complex since non allelic interactions were detected. A significant additive genetic variance was found for fruit shelf life as well as for other fruit quality traits in each cross. The genetic parameters analyzed by mean values and variances in parental, F 1 and F 2 and backcross generations indicated that the cross between the normal ripening cultivar and LA1385 of S. lycopersicum var. cerasiforme offers the best possibility to obtain long shelf life tomato genotypes with good fruit quality.

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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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Tomato Fruit Quality and Shelf Life in Hybrids Heterozygous for the alc Ripening Mutant

Cited by 44 publications

References 10 publications

Genetic basis of long shelf life and variability into Penjar tomato

Genetic basis of long shelf life and variability into Penjar tomato

Inheritance of shelf life and other quality traits of tomato fruit estimated from F1’s, F2’s and backcross generations derived from standard cultivar, nor homozygote and wild cherry tomato

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

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