scholarly journals Hybrid vigour and gene action for two quantitative traits of castor plant (Ricinus communis L.)

1998 ◽  
Vol 31 (1) ◽  
Author(s):  
MI Uguru ◽  
LN Abuka
Keyword(s):  
Quantitative Traits ◽  
Gene Action ◽  
Ricinus Communis ◽  
Hybrid Vigour ◽  
Castor Plant

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.

Characterization of a cDNA encoding ricin E, a hybrid ricin-Ricinus communis agglutinin gene from the castor plant Ricinus communis

1987 ◽  
Vol 9 (3) ◽  
pp. 287-295 ◽  
Author(s):  
Beth F. Ladin ◽  
Elizabeth E. Murray ◽  
Amy C. Halling ◽  
Kevin C. Halling ◽  
Nanda Tilakaratne ◽  
...  
Keyword(s):  
Ricinus Communis ◽  
Ricinus Communis Agglutinin ◽  
Castor Plant

Genetic analysis of various quantitative traits ininter-varietal crosses of Vigna mungo

2016 ◽  
Author(s):  
Shayla Bindra ◽  
R. K. Mittal ◽  
V. K. Sood ◽  
H. K. Chaudhary
Keyword(s):  
Yield Components ◽  
Quantitative Traits ◽  
Gene Action ◽  
Duplicate Gene ◽  
Vigna Mungo ◽  
Dominance Model ◽  
Early Generation ◽  
Gene Effects ◽  
Complementary Gene ◽  
Complementary Gene Action

Gene effects for 13 characters in four crosses of Vigna mungo were studied by six parameter generation mean model to determine the potential for the improvement of yield components. Scaling tests revealed inadequacy of the additive-dominance model for all the traits indicating the presence of non-allelic interactions. Duplicate gene action was observed for six characters in KUG-216 x HPBU-111, five in KUG-216 x Palampur-93, two in IPU-05-13 x Palampur-93 and one in IPU-05-13 x HPBU-111 and complementary gene action for one character each in KUG-216 x Palampur-93 and IPU-05-13 x HPBU-111 cross. Selection in later generations for duplicate gene action and early generation selection involving intermatings in F2 f or complementary gene action should be adopted for harnessing desirable recombinants.

scholarly journals Effect of supplemental Ca2+ on NaCl-stressed castor plants (Ricinus communis L.)

2012 ◽  
Vol 71 (1) ◽  
pp. 13-29 ◽  
Author(s):  
Seema Joshi ◽  
Neha Patel ◽  
Indu Pandey ◽  
Amar Pandey
Keyword(s):  
Seed Germination ◽  
Plant Growth ◽  
Critical Level ◽  
Saline Soil ◽  
Ricinus Communis ◽  
Plant Tissues ◽  
Beneficial Effects ◽  
Ricinus Communis L ◽  
Castor Plant ◽  
Level 1

Effect of supplemental Ca2+on NaCl-stressed castor plants (Ricinus communisL.)Greenhouse experiments were conducted to assess the effects of supplemental Ca2+in salinised soil on germination and plant growth response of castor plant (Ricinus communisL. Var. Avani-31, Euphorbiaceae). NaCl amounting to 390 g was thoroughly mixed with soil of seven lots, of 100 kg each, to give electrical conductivity of 4.1 dS m-1. Further, Ca(NO3)2x 4H20 to the quantity of 97.5, 195, 292.5, 390, 487.5, and 585 g was separately mixed with soil of six lots to give 1:0.25, 1:0.50, 1:0.75, 1:1, 1:1.25, and 1:1.50 Na+/Ca2+ratios, respectively. The soil of the seventh lot contained only NaCl and its Na+/Ca2+ratio was 1:0. Soil without addition of NaCl and Ca (NO3)2x 4H20 served as control, with a 0:0 Na+/Ca2+ratio. Salinity significantly retarded seed germination and plant growth, but the deleterious effects of NaCl on seed germination were ameliorated and plant growth was restored with Ca2+supply at the critical level (1:0.25 Na+/Ca2+ratio) to salinised soil. Supply of Ca2+above the critical level further retarded seed germination and plant growth due to the increased soil salinity. Salt stress reduced N, P, K+and Ca2+content in plant tissues, but these nutrients were restored by addition of Ca2+at the critical level to saline soil. In contrast, Na+content in plant tissues significantly increased in response to salinity, but significantly decreased with increasing Ca2+supply to saline soil. The results are discussed in terms of the beneficial effects of Ca2+supply on the plant growth ofRicinus communisgrown under saline conditions.

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