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

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 (248) New Four Genes Related to Seed Characteristics, Flower Appearance, and Red Color

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1019A-1019
Author(s):  
Zhoo-Hyeon Kim
Keyword(s):  
Recessive Gene ◽  
Single Recessive Gene ◽  
Young Plant ◽  
Breeding Lines ◽  
Red Color ◽  
Plant Stage ◽  
Ethylmethane Sulfonate ◽  
V Gene ◽  
Limited Base ◽  
Seed Characteristics

New four traits not yet reported were founded. One mutant plant was from a population of 81-1251-D-20M treated with EMS (ethylmethane sulfonate), which had tubular petals. This tubular petal plant had normal pollens in anthers, but could almost not produce its seeds without artificial pollination. It was controlled by one single recessive gene. One new spontaneous dwarf mutant line, R3-10, which bore seedcoatless-like seeds with short pappus, was crossed with normal breeding lines GL5 and 87-25M-2M. From F2 and F3 results, it was found that the two traits (seedcoatless-like and short pappus) were governed by each one single recessive gene. A stem lettuce type cultivar, `Baimach', seemed to be almost green, but was really tinged red, which was extremely suppressed in red color expression. Its tinged red color could not be seen, except on only very limited base parts of the stem and dorsal petal. In two F2 population experiments of the crosses of `Baimach' with `Oakleaf' and 98-43-3, it was found that the suppression of red color expression in `Baimach' was caused by a single recessive gene. It looked different from that of gene “v” (vanishing) by Lindqvist, because the red color of plants with “v” gene of Lindqvist were typically tinged and could be identified easily at a young plant stage, but not that of `Baimach'. I designated these new four genes as Tu-tu (Tu = normal, tu = tubular petal), Pp-pp (Pp = normal, pp = short pappus), Scl-scl (Scl = normal, scl = seedcoatless-like), and In-in (In = normal, in = inhibiting red color expression extremely).

scholarly journals Characterization and Gene Mapping of non-open hull 1 (noh1) Mutant in Rice (Oryza sativa L.)

Agronomy ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 56 ◽  
Author(s):  
Jun Zhang ◽  
Hao Zheng ◽  
Xiaoqin Zeng ◽  
Hui Zhuang ◽  
Honglei Wang ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Recessive Gene ◽  
Physical Region ◽  
Chromosome 1 ◽  
Single Recessive Gene ◽  
Rice Mutant ◽  
Qpcr Analysis ◽  
Ethylmethane Sulfonate ◽  
Sterile Lemma

Hull opening is a key physiological process during reproductive development, strongly affecting the subsequent fertilization and seed development in rice. In this study, we characterized a rice mutant, non-open hull 1 (noh1), which was derived from ethylmethane-sulfonate (EMS)-treated Xinong 1B (Oryza sativa L.). All the spikelets of noh1 developed elongated and thin lodicules, which caused the failure of hull opening and the cleistogamy. In some spikelets of the noh1, sterile lemmas transformed into hull-like organs. qPCR analysis indicated that the expression of A- and E-function genes was significantly upregulated, while the expression of some B-function genes was downregulated in the lodicules of noh1. In addition, the expression of A-function genes was significantly upregulated, while the expression of some sterile-lemma maker genes was downregulated in the sterile lemma of noh1. These data suggested that the lodicule and sterile lemma in noh1 mutant gained glume-like and lemma-like identity, respectively. Genetic analysis showed that the noh1 trait was controlled by a single recessive gene. The NOH1 gene was mapped between the molecular markers ZJ-9 and ZJ-25 on chromosome 1 with a physical region of 60 kb, which contained nine annotated genes. These results provide a foundation for the cloning and functional research of NOH1 gene.

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

INHERITANCE OF OAT STEM RUST RESISTANCE IN A TUNISIAN STRAIN OF AVENA STERILIS

1970 ◽  
Vol 12 (3) ◽  
pp. 501-505 ◽  
Author(s):  
R. I. H. McKenzie ◽  
J. W. Martens ◽  
T. Rajhathy
Keyword(s):  
Stem Rust ◽  
Avena Sativa ◽  
Rust Resistance ◽  
Recessive Gene ◽  
Stem Rust Resistance ◽  
Single Recessive Gene ◽  
Avena Sterilis ◽  
Wide Range ◽  
High Level

The strain CW490-2 of Avena sterilis L. possesses a single recessive gene, pg-13, for oat stem rust resistance. It confers resistance to a wide range of stem rust races. Gene pg-13 is not linked to Pg-1 or pg-9 but appears tightly-linked or allelic with Pg-4. A high level of sterility in the progeny of crosses between Avena sativa varieties and CW490-2 is apparently due to four interchange differences.

scholarly journals Genetics of naked grain oats in crosses with Brazilian genotypes

2000 ◽  
Vol 23 (4) ◽  
pp. 851-854 ◽  
Author(s):  
Cândida Braga Cabral ◽  
Sandra Cristina Kothe Milach ◽  
Luiz Carlos Federizzi ◽  
Cristhiane Abegg Bothona ◽  
Ivone Taderka ◽  
...  
Keyword(s):  
Avena Sativa ◽  
Major Gene ◽  
Incomplete Dominance ◽  
Naked Oat ◽  
The Usa ◽  
Selection For

Six crosses between three naked oat (Avena sativa L.) germplasm sources from the USA and Australia and three Brazilian hulled genotypes were studied for the segregation of naked grain and multiflorous spikelet traits in the F2 and F3 generations. One major gene with incomplete dominance and expressivity for both traits was identified in all populations. The occurrence of intermediate types for naked grain varied with the population and did not depend on the germplasm source of naked grain used. The frequency of intermediate types varied among F2 populations indicating that selection for higher expressivity of naked grain could be used to develop Brazilian oat lines with naked grain.

scholarly journals A Proposed Model for Inheritance of Primocane Fruiting in Tetraploid Erect Blackberry

2000 ◽  
Vol 125 (2) ◽  
pp. 217-221 ◽  
Author(s):  
Jose Lopez-Medina ◽  
James N. Moore ◽  
Ronald W. McNew
Keyword(s):  
Negative Relationship ◽  
Recessive Gene ◽  
Segregation Ratio ◽  
Breeding Strategies ◽  
Single Recessive Gene ◽  
Tetrasomic Inheritance ◽  
Proposed Model ◽  
Inheritance Model ◽  
Diallel Crossing ◽  
Scheme Selection

Inheritance of the primocane-fruiting (PF) characteristic was studied in seedling populations of tetraploid (4x) blackberries (Rubus subgenus Rubus). Four selections (A-1836, A-593, A-830, and A-1680) and two cultivars (`Arapaho' and `Shawnee') were used as parents in a full diallel crossing scheme. Selection A-593 was used as the main source for PF due to its origin (`Brazos' × `Hillquist,' the latter an old PF cultivar). All parents except `Shawnee' have A-593 in their parentage; among the parents, only A-1836 fully expresses PF. Selfing of A-1836 resulted in 100% PF offspring, indicating that A-1836 is homozygous for this trait. Selfing of A-593, A-830, and `Arapaho' produced either a 35:1 or a 20.8:1 FF (floricane or summer-fruiting):PF segregation ratio, fitting a tetrasomic inheritance model under either random chromosome assortment (RCSA) or random chromatid assortment (RCTA), respectively, also suggesting that PF is controlled by a single recessive gene and that the parents are duplex (AAaa) for this trait. Selection A-1680 and `Shawnee' selfed did not produce PF progeny, but when crossed with the nulliplex A-1836, gave a 27:1 FF:PF ratio, indicating RCTA and that they are triplex (AAAa) for PF. According to these research, both gametic outputs (RCSA and RCTA) seem to operate in 4x blackberry. The intensity in expression of PF had a negative relationship with time to harvest, with those seedlings showing the highest PF scores producing a crop in early to mid-August. This knowledge will be helpful in implementing breeding strategies to produce PF blackberry cultivars.

Root Absorption and Translocation of Picloram by Oats and Soybeans

Weed Science ◽  
1971 ◽  
Vol 19 (6) ◽  
pp. 727-731 ◽  
Author(s):  
A. R. Isensee ◽  
G. E. Jones ◽  
B. C. Turner
Keyword(s):  
Glycine Max ◽  
Plant Species ◽  
Sodium Azide ◽  
Avena Sativa ◽  
Sodium Arsenite ◽  
Solution Concentration ◽  
Metabolic Inhibitors ◽  
Root Absorption ◽  
Soybean Roots ◽  
Initial Uptake

The effects of time, concentration, pH, temperature, and metabolic inhibitors on 4-amino-3,5,6-trichloropicolinic acid (picloram) uptake from nutrient solution by oats (Avena sativaL. ‘Markton’) and soybeans (Glycine maxL. ‘Lee’) were studied. Oats and soybeans had similar absorption patterns of rapid initial uptake. However, total accumulation patterns markedly differed in that accumulation was concentration-dependent for oats but not for soybeans. Initial uptake by oats and soybean roots increased as solution concentration increased. Picloram was redistributed in oats and soybeans and some egress from roots to solution occurred. Picloram uptake by both plant species was markedly diminished with an increase in pH from 3.5 to 4.5, but pH had little effect from 4.5 to 9.5. Less picloram was taken up by oats and soybean roots from solution maintained at 4 C than at 26 C. Translocation to tops followed a similar trend. Increasing concentrations of three metabolic inhibitors, 2,4-dinitrophenol (DNP), sodium azide, and sodium arsenite, reduced root uptake of picloram in both species. All inhibitors (except DNP for oats) at 10−6to 10−5molar concentrations stimulated translocation of picloram to oats and soybean tops while higher concentrations depressed translocation.

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