GENE ACTION FOR PROTEIN AND OIL CONTENT IN SUMMER RAPE

1977 ◽  
Vol 57 (3) ◽  
pp. 625-631 ◽  
Author(s):  
BAHRAM GRAMI ◽  
B. R. STEFANSSON
Keyword(s):  
Brassica Napus ◽  
Genetic Control ◽  
Oil Content ◽  
Gene Action ◽  
Additive Gene Action ◽  
Brassica Napus L ◽  
Percent Protein ◽  
Additive Gene ◽  
Selection For

Genetic control of percent protein, percent oil, and sum of protein and oil as a percentage of the seed was investigated in two summer rape (Brassica napus L.) cultivars, Midas and Tower, and their F1, F2 and backcross generations. All three traits were found to be governed by additive gene action. Dominance was not significant and epistasis was absent. Selection for sum of protein and oil was shown to be more effective than selection for either protein or oil alone.

GENETICS OF PROTEIN AND OIL CONTENT IN SUMMER RAPE: HERITABILITY, NUMBER OF EFFECTIVE FACTORS, AND CORRELATIONS

1977 ◽  
Vol 57 (3) ◽  
pp. 937-943 ◽  
Author(s):  
BAHRAM GRAMI ◽  
B. R. STEFANSSON ◽  
R. J. BAKER
Keyword(s):  
Brassica Napus ◽  
Oil Content ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Brassica Napus L ◽  
Breeding Programs ◽  
Effective Factors ◽  
Percent Protein ◽  
Oilseed Breeding ◽  
Parental Differences

The estimates of broad sense heritability in the F2 generation derived from a cross involving two summer rape (Brassica napus L.) cultivars were approximately 0.26 for each of percent protein and percent oil, and 0.33 for the "sum" of protein and oil as a percentage of the seed. The number of effective factors conditioning parental differences in percent protein, percent oil, and sum were estimated as five to seven, one, and two, respectively. Average phenotypic and genotypic correlations between protein and oil content were −0.81 and −0.71, respectively. These strong negative correlations, often considered undesirable, can be utilized in oilseed breeding programs by selecting for the sum of protein and oil rather than for either component.

Inheritance of kernel protein content in five spring wheat crosses

1983 ◽  
Vol 25 (4) ◽  
pp. 398-402 ◽  
Author(s):  
D. R. Sampson ◽  
D. W. Flynn ◽  
P. Y. Jui
Keyword(s):  
Protein Content ◽  
Spring Wheat ◽  
Gene Action ◽  
Triticum Aestivum L ◽  
Additive Gene Action ◽  
Frequency Distributions ◽  
Normal Frequency ◽  
Percent Protein ◽  
Additive Gene ◽  
Kernel Protein

Kernel protein content was determined in the F4 and F6 generations, grown in 1976 and 1977, of five crosses of spring wheat (Triticum aestivum L.) using infrared reflectance spectroscopy. All crosses showed continuous variation in percent protein with more or less normal frequency distributions between the two parents. Progeny means were slightly lower than the midparent values in most crosses and significantly so in the cross between the two high protein parents. The ranks of the midparent values were excellent predictors of the ranks of the progeny means. Heritability in standard units, based on intergeneration correlations, ranged from 0.25 to 0.50. These results suggest additive gene action by at least two minor genes whose individual segregation patterns were masked by larger environmental and error variances. Epistatic effects are postulated to account for the lower mean protein in the high × high cross. Two of the five crosses showed significant correlations between kernel hardness and protein content of r = 0.22 and 0.25 in the F4 but these were negative and not significant in the F6.

Inheritance of earliness, height, and leaf number in crosses of early maturing rapeseed

1986 ◽  
Vol 28 (6) ◽  
pp. 1009-1015 ◽  
Author(s):  
E. A. Ringdahl ◽  
P. B. E. McVetty ◽  
J. L. Sernyk
Keyword(s):  
Brassica Napus ◽  
Gene Action ◽  
Broad Sense ◽  
Leaf Number ◽  
Narrow Sense ◽  
Additive Gene Action ◽  
Narrow Sense Heritability ◽  
Randomized Design ◽  
Days To Maturity ◽  
Additive Gene

A dwarf early Brassica napus line (D-001), derived from crosses with Diplotaxis muralis, was crossed to two B. napus cultivars, 'Regent' and 'Pivot' to study the inheritance of earliness (days to bud, days to first flower, and days to maturity), height, and leaf number. Spaced plants of P1, P2, F1, F2, BC1, and BC2 generations for both crosses were grown in a completely randomized design at two locations in Manitoba in 1984. Results of means analyses indicated that additive gene action predominated for all traits for both crosses and both locations. In addition, dominance gene action was found to influence days to first flower, days to maturity, and leaf number for the D-001 × 'Regent' cross and all traits for the D-001 × 'Pivot' cross. Nonallelic interactions were nonsignificant in all cases. Genotype × environment interactions were not significant for all traits except height. Variance analyses indicated a predominance of additive gene action. Broad sense heritabilities for phenological traits ranged from 55 to 90%, while narrow sense heritabilities ranged from 0 to 81%. For height, broad and narrow sense heritability estimates were equal and ranged from 51 to 84%. Heritability for leaf number ranged from 73 to 82% for broad sense and from 49 to 77% for narrow sense estimates. The predominance of additive gene action and the high heritabilities associated with these traits suggest that D-001 may be useful as a source of earliness in B. napus breeding programs. Key words: Brassica napus, earliness, inheritance, Diplotaxis muralis.

Combining Ability and Rank Correlations in a Diallel Cross of Indian Mustard (Brassica juncea)

1977 ◽  
Vol 13 (1) ◽  
pp. 71-79 ◽  
Author(s):  
A. N. Asthana ◽  
V. K. Pandey
Keyword(s):  
Oil Content ◽  
Gene Action ◽  
Indian Mustard ◽  
Branch Length ◽  
Diallel Cross ◽  
Flower Number ◽  
Additive Gene Action ◽  
Branch Number ◽  
Additive Gene ◽  
Per Se

SUMMARYA diallel cross study on Indian mustard revealed a preponderance of additive gene action for seven characters out of the nine studied. Plant height and seeds per siliqua seemed to be controlled by both additive and non-additive gene action. Days to flower, number of secondary branches, length of main branch, number of siliquae on the main branch, length of siliqua and yield per plant were mainly controlled by additive gene action, whereas oil content was determined mainly by non-additive gene action. Heterosis was prevalent and the maternal effect was not generally apparent in the crosses. Rank correlations established a positive correlation between performance per se and GCA, and between heterosis and SCA.

Genetic control of oil content in oilseed rape (Brassica napus L.)

2006 ◽  
Vol 113 (7) ◽  
pp. 1331-1345 ◽  
Author(s):  
R. Delourme ◽  
C. Falentin ◽  
V. Huteau ◽  
V. Clouet ◽  
R. Horvais ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Genetic Control ◽  
Oilseed Rape ◽  
Oil Content ◽  
Brassica Napus L

scholarly journals Genetics of test weight and oil content in cuphea procumbens

Genetika ◽  
2002 ◽  
Vol 34 (1) ◽  
pp. 1-10 ◽  
Author(s):  
S.P. Singh ◽  
Meenakshi Singh
Keyword(s):  
Oil Content ◽  
Gene Action ◽  
Capric Acid ◽  
Graphical Analysis ◽  
Test Weight ◽  
Additive Gene Action ◽  
Additive Gene ◽  
Type Interaction ◽  
Low X ◽  
Genetic Combination

Cuphea is an important genus of medium chain triglycerides and Cuphea procumbens is rich in capric acid (C10:0), which is main plant source of petrochemicals. A detailed study was conducted on different genetic systems involved in the inheritance of test weight and oil content in Cuphea procumbens following 6 parents diallel. The high value of dominance (H1) and (?2s) and over-dominance obtained by (H1/D)0.5 and graphical analysis indicated the prevalence of non-additive gene action for test weight and oil content. Parent 'NBC-30' in F1 and 'NBC-03' in F2 for test weight and 'NBC-30' for both the generation for oil content were., best combiners. The crosses 'NBC-12' x 'NBC-30', 'NBC-01' x 'NBC-03' and 'NBC-12' x 'NBC-20' for test weight and 'NBC- 01' x 'NBC-03' and 'NBC-25' x 'NBC-30' for oil content were best specific cross combinations in both the generations. The genetic combination of these crosses were additive x additive, additive x dominance and dominance x dominance type interaction due to involvement of high x high, high x low and low x low combiners. A breeding plan to develop bold seeded genotypes to increase oil content has been discussed.

scholarly journals Unravelling the Complex Interplay of Transcription Factors Orchestrating Seed Oil Content in Brassica napus L.

2021 ◽  
Vol 22 (3) ◽  
pp. 1033
Author(s):  
Abirami Rajavel ◽  
Selina Klees ◽  
Johanna-Sophie Schlüter ◽  
Hendrik Bertram ◽  
Kun Lu ◽  
...  
Keyword(s):  
Gene Expression ◽  
Transcription Factors ◽  
Brassica Napus ◽  
Oil Content ◽  
Seed Oil ◽  
Seed Oil Content ◽  
Complex Interplay ◽  
Brassica Napus L ◽  
Data Set ◽  
Developmental Switches

Transcription factors (TFs) and their complex interplay are essential for directing specific genetic programs, such as responses to environmental stresses, tissue development, or cell differentiation by regulating gene expression. Knowledge regarding TF–TF cooperations could be promising in gaining insight into the developmental switches between the cultivars of Brassica napus L., namely Zhongshuang11 (ZS11), a double-low accession with high-oil- content, and Zhongyou821 (ZY821), a double-high accession with low-oil-content. In this regard, we analysed a time series RNA-seq data set of seed tissue from both of the cultivars by mainly focusing on the monotonically expressed genes (MEGs). The consideration of the MEGs enables the capturing of multi-stage progression processes that are orchestrated by the cooperative TFs and, thus, facilitates the understanding of the molecular mechanisms determining seed oil content. Our findings show that TF families, such as NAC, MYB, DOF, GATA, and HD-ZIP are highly involved in the seed developmental process. Particularly, their preferential partner choices as well as changes in their gene expression profiles seem to be strongly associated with the differentiation of the oil content between the two cultivars. These findings are essential in enhancing our understanding of the genetic programs in both cultivars and developing novel hypotheses for further experimental studies.

scholarly journals The Effects of Combining Ability for Yield Traits in Rice (Oryza sativa L.) under Sodic Soil

2020 ◽  
pp. 34-44
Author(s):  
Durgesh Kumar Shukla ◽  
S. N. Singh ◽  
S. C. Gaur ◽  
Anil Kumar
Keyword(s):  
Combining Ability ◽  
Gene Action ◽  
Oryza Sativa L ◽  
Hybrid Vigour ◽  
Yield Traits ◽  
Additive Gene Action ◽  
Early Maturity ◽  
Additive Gene ◽  
Rice Genotypes ◽  
Positive Effect

Information on combining ability is derived from data on twelve yield and yield contributing characters in fifteen male and three female parents utilised in line x tester fashion to estimate combining ability of rice genotypes under coastal saline condition. Forty Five hybrids generated from crossing three lines with fifteen testers were studied along with their parents for combining ability and gene action involved in the expression of characters in rice. The gca and sca effects were significant for all the characters. The magnitude of sca variance was higher than the gca variance for all the characters revealed the presence of predominance of non-additive gene action for all the characters under study. Halchal (-12.29) was found to be good general combiners for days to 50% flowering and early maturity, Halchal (-13.39). However, IR-24 (1.88) was good general combiners with significant positive effect for tallness. Magic (-12.05) good general combiners for dwarfness and Shriram 434 (1.57) was good general combiners for test weight however, Moti was best general combiner with gca estimates of 7.07 for harvest index and Kuber (3.48) was the good general combiners for yield/hill. Cross combinations RHR 27 x IR 24 (4.04) was significant and positive effect for yield/hill, performance for ear bearing tillers per plant were RHR 27 x IR 24 (1.88). In general, the crosses showing significant and desirable combining ability effects were associated with better per se performance for the respective traits. These hybrids could be utilized in heterosis breeding to exploit hybrid vigour.

scholarly journals Effects of sulphur on the yield, yield component characters and oil content of oilseed rape

2021 ◽  
Vol 66 (1) ◽  
pp. 17-25
Author(s):  
Valiollah Rameeh ◽  
Maryam Niakan ◽  
Mohammad Mohammadi
Keyword(s):  
Brassica Napus ◽  
Plant Height ◽  
Oilseed Rape ◽  
Seed Yield ◽  
Oil Content ◽  
Statistical Difference ◽  
Mean Value ◽  
Yield Component ◽  
Brassica Napus L ◽  
Significant Statistical Difference

The effects of four sulphur levels: S0, S1, S2 and S3, including 0, 12, 24 and 36 kg S ha-1, respectively, along with 115 kg N ha-1 were studied on yield-related traits of oilseed rape (Brassica napus L.). The significant variance of treatments was determined for plant height, yield component characters, seed yield and oil content. The sulphur application significantly increased most of the traits compared to the S0 level. The S3 (36 kg S ha-1) treatment led to the highest mean value of plant height (132 cm) which was classified with S2 (24 kg S ha-1) in the same statistical group. Sulphur had an increasing effect on pods per plant, and it ranged from 92 to 196 for S0 and S3 applications, respectively. S0 and S1 with 92 and 121 pods per plant were grouped in the same statistical group. In addition, S2, and S3 with 165 and 196 pods per plant showed no significant statistical difference. The sulphur application significantly increased seed yield compared to control (S0 level), and it ranged from 2744 to 3215 kg ha-1 in S0 and S3, respectively. The average oil contents of 45.69, 46.96, 47.46 and 49.53 % were detected for 0, 12, 24 and 36 kg S ha-1, respectively.

scholarly journals Assessment of Genetic Variability for Agro-Morphological Important Traits in Aman Rice (Oryza Sativa L.)

2015 ◽  
Vol 3 (1) ◽  
pp. 73-79
Author(s):  
Golam Sarwar ◽  
Md. Sarowar Hossain ◽  
Md.Harun -Ur- Rashid ◽  
Shahanaz Parveen
Keyword(s):  
Oryza Sativa ◽  
Genetic Parameters ◽  
Gene Action ◽  
Oryza Sativa L ◽  
Genetic Advance ◽  
Panicle Length ◽  
Additive Gene Action ◽  
Days To Maturity ◽  
Additive Gene ◽  
High Heritability

The present study was conducted in the experimental farm, Sher-e-Bangla Agricultural University (SAU), Dhaka during July 2013-December2013. The analysis of variance revealed significant deviation for all the characters studied and indicated the existence of variation among thegenotypes. The PCV values were slightly higher than the respective GCV values for all the characters except unfilled grains per panicleindicating that the characters were less influenced by the environment. Total tillers per plant, effective tillers per plant, filled grains per panicle,unfilled grains per panicle and yield per plant showed high heritability coupled with high genetic advance percentage of mean which indicatedthe preponderance of additive gene action and such characters could be improved through selection. High heritability along with low geneticadvance as percentage of mean was found for plant height, days to 50% flowering, panicle length, days to maturity and thousand grains weightwhich indicated the non additive gene action for expression of these characters. Considering the genetic parameters and other agronomicperformances, the genotypes Special from AL-29, AL-36, PP-4B(i), AL-17(iii)B, AL-17(iii), AL-17(ii)A, Special from-129, Special from17(iv), AL-44(i), AL-17, Special from AL-36(D), PP-48, IR-25B, Special from AL-33, IR-25B (Tall), P-5B (ii) might be considered betterparents for future hybridization programme.DOI: http://dx.doi.org/10.3126/ijasbt.v3i1.11896    Int J Appl Sci Biotechnol, Vol. 3(1): 73-79 

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