Genetic control of a slow-ripening fruit trait in nectarine

1991 ◽  
Vol 71 (2) ◽  
pp. 601-603 ◽  
Author(s):  
D. W. Ramming
Keyword(s):  
Key Words ◽  
Genetic Control ◽  
Prunus Persica ◽  
Recessive Gene ◽  
Stone Fruit ◽  
Single Recessive Gene ◽  
Segregation Ratios ◽  
Peach Breeding

Inheritance of a slow-ripening trait was investigated in segregating progenies of nectarine (Prunus Persica (L.), Batsch var. nucipersica Schneid). Segregation ratios suggest that the trait is controlled by a single recessive gene, for which the symbol sr is proposed. Fantasia, Flamekist, and Fairlane nectarines are heterozygous at the sr locus. Key words: Peach, breeding, postharvest, genetics, stone fruit

scholarly journals Genetics of Semideterminate Growth Habit in Tomato

HortScience ◽  
1991 ◽  
Vol 26 (8) ◽  
pp. 1074-1075 ◽  
Author(s):  
Yonatan Elkind ◽  
Arie Gurnick ◽  
Nachum Kedar
Keyword(s):  
Lycopersicon Esculentum ◽  
Genetic Control ◽  
Goodness Of Fit ◽  
Growth Habit ◽  
Recessive Gene ◽  
Main Stem ◽  
Single Recessive Gene ◽  
Gene Model ◽  
Chi Square ◽  
Tomato Line

The objective of this study was to elucidate the genetic control of the semideterminate growth habit in tomato (Lycopersicon esculentum Mill.). A semideterminate tomato line was crossed with determinate and indeterminate lines; their F1, F2, and backcrosses were grown; and the growth habit recorded and analyzed. Plants with six or more inflorescences on the main stem were defined as semideterminate, while those with fewer were defined as determinate. The F2 and backcross to determinate were bimodal, indicating a single recessive gene for semideterminate, which was denoted as sdt. The goodness-of-fit chi square for a single recessive gene model was 88% and 69% for F2 and backcross generations, respectively. In the cross between semideterminate and indeterminate types, the results indicated control by two genes, sp and sdt, with the sp+ indeterminate type epistatic over semideterminate. The goodness-of-fit to this model was 70% and 82% for F2 and backcross generations, respectively.

Gene controlling reduced trichomes on oat groats

2001 ◽  
Vol 81 (3) ◽  
pp. 413-414 ◽  
Author(s):  
V. D. Burrows ◽  
G. McDiarmid ◽  
T. Marder
Keyword(s):  
Key Words ◽  
Avena Sativa ◽  
Recessive Gene ◽  
Single Recessive Gene ◽  
Naked Oat

The groats of naked oat varieties are commonly covered with an abundance of surface borne trichomes. The trichomes are liberated into the air during threshing and handling and act as skin, eye, and respiratory irritants to operators. A bald strain (CN 18943) with a greatly reduced number of trichomes was bred and the bald trait was found to be conditioned by a single recessive gene, designated Gt-1. Key words: Avena sativa L., naked oat, reduced groat trichomes, gene Gt-1

scholarly journals Inheritance of a Chlorophyll Deficiency in Hazelnut

HortScience ◽  
1991 ◽  
Vol 26 (11) ◽  
pp. 1414-1416 ◽  
Author(s):  
Shawn A. Mehlenbacher ◽  
Maxine M. Thompson
Keyword(s):  
Recessive Gene ◽  
Corylus Avellana ◽  
Pedigree Analysis ◽  
Field Conditions ◽  
Recessive Allele ◽  
Single Recessive Gene ◽  
Chlorophyll Deficiency ◽  
Segregation Ratios ◽  
Chlorophyll Deficiencies

A chlorophyll deficiency expressed as yellowing of leaves was observed in hazelnut (Corylus avellana L.) progenies. Segregation ratios approximated 3 green: 1 yellow, indicating control by a single recessive gene designated chlorophyll deficient #1, for which the symbol c, is proposed. `Barcelona', `Butler', `Compton', `Lansing', Willamette', and the ornamental selection `Redleaf #3' are heterozygous. Pedigree analysis strongly suggests that all heteroxygotes inherited the recessive allele from `Barcelona'. A cross of `Barcelona' with the yellow-leafed ornamental Corylus avellana L. var. aurea Kirchn. produced no yellow-leafed seedlings, indicating that the chlorophyll deficiencies from these two sources are controlled by different loci. Progenies segregating simultaneously for this trait and the gene controlling presence of anthocyanin indicated that the two traits are inherited independently. Seedlings deficient in chlorophyll but with anthocyanin were able to survive under field conditions, while leaves of yellow-leafed seedlings lacking anthocyanin became scorched and the trees died.

scholarly journals Inheritance of the Cutleaf Trait in Hazelnut

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 611-612 ◽  
Author(s):  
Shawn A. Mehlenbacher ◽  
David C. Smith
Keyword(s):  
Leaf Shape ◽  
Recessive Gene ◽  
Corylus Avellana ◽  
Single Recessive Gene ◽  
Leaf Color ◽  
Chlorophyll Deficiency ◽  
Segregation Ratios

The cutleaf hazelnut [Corylus avellana L. f. heterophylla (Loud.) Rehder] is grown as an ornamental for its distinct leaf shape. Its leaves are slightly smaller, more deeply lobed, and more sharply toothed than those of standard hazelnut cultivars. When the cutleaf hazelnut was crossed with cultivars with normal leaves, all seedlings had normal leaves. When seedlings were backcrossed to their cutleaf parent, half of the seedlings expressed the cutleaf trait, and when crossed with each other in pairs, 25% of the seedlings were cutleaf. These segregation ratios indicate that the cutleaf trait is conferred by a single recessive gene for which the symbol cf is proposed. Progenies segregating simultaneously for leaf shape and color indicate that the cutleaf locus is independent of the locus controlling red leaf color and of the locus controlling a chlorophyll deficiency, which appears to be identical to that previously observed in seedlings of `Barcelona'.

scholarly journals Flower, Fruit, and Petiole Color of American Beautyberry (Callicarpa americana L.) Are Controlled by a Single Gene with Three Alleles

HortScience ◽  
2014 ◽  
Vol 49 (4) ◽  
pp. 422-424
Author(s):  
Ryan N. Contreras ◽  
John M. Ruter ◽  
David A. Knauft
Keyword(s):  
Single Gene ◽  
Recessive Gene ◽  
Single Recessive Gene ◽  
Allelic Series ◽  
Southeast United States ◽  
Sexual Hybridization ◽  
Segregation Ratios ◽  
Self Compatibility ◽  
Deciduous Shrub ◽  
Gene Symbols

American beautyberry (Callicarpa americana) is a deciduous shrub native to the southeast United States and is grown primarily for its metallic-purple fruit that develop in the fall. There are also pink- and white-fruiting and variegated forms but these traits are rare in nature and there is no information available regarding their inheritance. Also, there is confusion regarding self-compatibility and the presence of apomixis in Callicarpa L. Crosses were performed to investigate the genetics of fruit color, self-compatibility, and apomixis in american beautyberry. Test crosses between C. americana (CA) and C. americana ‘Lactea’ (CAL) suggested that white fruit is recessive to purple. White fruit appears to be controlled by a single recessive gene for which we propose the name white fruit and the gene symbol wft. Although there were only a limited number of progeny grown, crosses between CA and ‘Welch’s Pink’ suggest that purple is dominant to pink. Test crosses between CAL and ‘Welch’s Pink’ are needed to draw conclusions; however, we propose that purple, pink, and white fruit are controlled by an allelic series for which we suggest the gene symbols Wft > wft p > wft. Segregation ratios suggested that all progeny in the study developed through sexual hybridization. All genotypes used in the current study were self-compatible.

A naked oat mutant with very short rachillas

2002 ◽  
Vol 82 (1) ◽  
pp. 83-84 ◽  
Author(s):  
V. D. Burrows ◽  
C. F. Konzak ◽  
G. McDiarmid ◽  
J. Deyl
Keyword(s):  
Key Words ◽  
Sodium Azide ◽  
Avena Sativa ◽  
Recessive Gene ◽  
Single Recessive Gene ◽  
Naked Oat ◽  
Treated Seed ◽  
Ethylmethane Sulfonate

Groats of the naked seeded oat variety Tibor were treated with mutagenic agents sodium azide and ethylmethane sulfonate. A floral mutant with very short rachillas was selected from a M4 population of the mutagen treated seed. This very unusual trait was found to be controlled by a single recessive gene named sr-1. Key words: Mutant, Avena sativa L., naked oat, very short rachilla, gene sr-1

scholarly journals High-Throughput Screening and Characterization of Phenolic Compounds in Stone Fruits Waste by LC-ESI-QTOF-MS/MS and Their Potential Antioxidant Activities

Antioxidants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 234 ◽  
Author(s):  
Yili Hong ◽  
Zening Wang ◽  
Colin J. Barrow ◽  
Frank R. Dunshea ◽  
Hafiz A. R. Suleria
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Prunus Persica ◽  
Phenolic Content ◽  
Antioxidant Potential ◽  
Stone Fruit ◽  
Total Phenolic ◽  
Stone Fruits ◽  
Antioxidant Power ◽  
Pharmaceutical Industries

Stone fruits, including peach (Prunus persica L.), nectarine (Prunus nucipersica L.), plum (Prunus domestica L.) and apricot (Prunus armeniaca L.) are common commercial fruits in the market. However, a huge amount of stone fruits waste is produced throughout the food supply chain during picking, handling, processing, packaging, storage, transportation, retailing and final consumption. These stone fruits waste contain high phenolic content which are the main contributors to the antioxidant potential and associated health benefits. The antioxidant results showed that plum waste contained higher concentrations of total phenolic content (TPC) (0.94 ± 0.07 mg gallic acid equivalents (GAE)/g) and total flavonoid content (TFC) (0.34 ± 0.01 mg quercetin equivalents (QE)/g), while apricot waste contained a higher concentration of total tannin content (TTC) (0.19 ± 0.03 mg catechin equivalents (CE)/g) and DPPH activity (1.47 ± 0.12 mg ascorbic acid equivalents (AAE)/g). However, nectarine waste had higher antioxidant capacity in ferric reducing-antioxidant power (FRAP) (0.98 ± 0.02 mg AAE/g) and total antioxidant capacity (TAC) (0.91 ± 0.09 mg AAE/g) assays, while peach waste showed higher antioxidant capacity in 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) assay (0.43 ± 0.09 mg AAE/g) as compared to other stone fruits waste. Qualitative and quantitative phenolic analysis of Australian grown stone fruits waste were conducted by liquid chromatography coupled with electrospray-ionization quadrupole time-of-flight mass spectrometry (LC-ESI-QTOF-MS/MS) and HPLC-photodiode array detection (PDA). The LC-ESI-QTOF-MS/MS result indicates that 59 phenolic compounds were tentatively characterized in peach (33 compounds), nectarine (28), plum (38) and apricot (23). The HPLC-PDA indicated that p-hydroxybenzoic acid (18.64 ± 1.30 mg/g) was detected to be the most dominant phenolic acid and quercetin (19.68 ± 1.38 mg/g) was the most significant flavonoid in stone fruits waste. Hence, it could be concluded that stone fruit waste contains various phenolic compounds and have antioxidant potential. The results could support the applications of these stone fruit wastes in other food, feed, nutraceutical and pharmaceutical industries.

Inheritance of isozymes in seed and bud tissues of blue and Engelmann spruce

Genome ◽  
1987 ◽  
Vol 29 (2) ◽  
pp. 239-246 ◽  
Author(s):  
S. G. Ernst ◽  
D. E. Keathley ◽  
J. W. Hanover
Keyword(s):  
Acid Phosphatase ◽  
Key Words ◽  
Malate Dehydrogenase ◽  
Glutamate Oxaloacetate Transaminase ◽  
Blue Spruce ◽  
Mating Design ◽  
Engelmann Spruce ◽  
Enzyme Systems ◽  
Segregation Ratios ◽  
Mode Of Inheritance

Thirteen loci from 11 enzyme systems were identified among full-sib and half-sib progeny of blue and Engelmann spruce. Eleven of the loci were expressed in bud, embryo, and megagametophyte tissue; the remaining two loci were expressed only in embryo and megagametophyte tissue. There were no mobility differences observed between loci expressed in seed and bud tissues. The mode of inheritance for 10 of the loci was confirmed based on progeny genotypic distributions. For the two loci not expressed in bud tissue, acid phosphatase (Acp-2) and diaphorase (Dia-2), inheritance was inferred from pooled segregation ratios of megagametophytes from open-pollinated seed from heterozygous females. The inheritance of glutamate oxaloacetate transaminase (Got-3) was also inferred from segregation ratios and diploid embryo phenotypes of open-pollinated progeny owing to a lack of variability at this locus among the 40 parents in the mating design. Two loci, aldolase (Ald) and malate dehydrogenase (Mdh-2), were monomorphic among the 20 parents of both species. Key words: isozymes, Engelmann spruce, blue spruce, Picea.

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