scholarly journals Variability and Genetic Advance for Seed Yield and its Components in Castor (Ricinus communis L.) Germplasm of CRIDA under Rain-Fed Conditions in Alfisols

2019 ◽  
Vol 8 (01) ◽  
pp. 2001-2011 ◽  
Author(s):  
P. Sowmya ◽  
M. Vanaja ◽  
V. Sunita ◽  
P. Raghuram Reddy
Keyword(s):  
Seed Yield ◽  
Ricinus Communis ◽  
Genetic Advance ◽  
Ricinus Communis L

Genetic Variance, Heritability and Number of Effective Genes for Spike Characters in Castor (Ricinus communis L.)

2021 ◽  
Vol 3 (2) ◽  
pp. 56-64
Author(s):  
B. Z. Salihu ◽  
F. Umar ◽  
A. A. Ajadi ◽  
A. M. Tanimu ◽  
B. O. Apuyor ◽  
...  
Keyword(s):  
Seed Yield ◽  
Genetic Variance ◽  
Ricinus Communis ◽  
Yield Component ◽  
Genetic Advance ◽  
Environmental Variance ◽  
Additive Variance ◽  
Selection Procedures ◽  
Ricinus Communis L ◽  
High Heritability

Adequate information on genetic variance and nature of gene actions for yield component characters are very crucial for a successful breeding programme. In this study, genetic variance, heritability and number of effective genes were estimated for Some Spike Characters in Castor. Bi-parental crosses were made among six castor lines at the National Cereals Research Institute (NCRI), Badeggi, Nigeria. Forty five (45) plant samples of parents and F1, 120 F2 and 60 BC1 and BC2 of the three crosses were evaluated for estimation of the genetic variance, heritability and number of effective genes for the traits studied. The results revealed significant variability among the generations for the genetic analysis. The results showed that the magnitude of the environmental variance for all the traits in all the crosses was lesser than both additive and dominance variances except for the number of capsules per raceme in the Cross II. High heritability (h2> 60%), high magnitude of additive variance compared to dominance, high genetic advance (GA > 20%) were observed for total raceme length in all the crosses. Predominant dominance variance, low heritability and moderate average genetic advance (17.69%) were recorded in the crosses for the seed yield per plant. Number of capsules per raceme (CPR) was controlled by 4.47 to 20.96 genes among the crosses. Seed weight (SW) was controlled by a range of 3.13 to 25.16 effective genes. For seed yield (SY), a range from 27.50 to 52.29 effective genes was observed. These findings provide a guide on choice of selection procedures for the improvement of the traits studied.

scholarly journals Heterosis for Seed Yield and its Contributing Attributes in Castor (Ricinus communis L.)

2017 ◽  
Vol 6 (4) ◽  
pp. 2088-2092
Author(s):  
Gita R. Chaudhari J.H. Chaudhary ◽  
Shivangini A. Gupta Shital R. Patel ◽  
Sejal K. Parmar
Keyword(s):  
Seed Yield ◽  
Ricinus Communis ◽  
Ricinus Communis L

Growth and Yield of Hybrid Castor (Ricinus communis L.) under Different Spacing during Rabi Season in Tamil Nadu

2017 ◽  
Vol 104 (4 - 6) ◽  
Author(s):  
Senthil Kumar G ◽  
◽  
Venkatachalam S R ◽  
Keyword(s):  
Seed Yield ◽  
Tamil Nadu ◽  
Ricinus Communis ◽  
Gray Mold ◽  
Growth And Yield ◽  
Research Station ◽  
Rabi Season ◽  
Ricinus Communis L ◽  
Main Plot ◽  
Cool Dry Season

A field experiment was conducted at Tapioca and Castor Research Station, Yethapur, Salem district, Tamil Nadu during the year 2012 – 2014. The following treatments were imposed and replicated thrice in split plot design. In main plot, different hybrids viz., YRCH 1(M1 ), GCH 4 (M2 ), DCH 519 (M3 ) and DCH 177 (M4 ) and in sub plot, different spacing viz., 90 x 90 cm (S1 ), 120 x 90 cm (S2 ) and 120 x 120 cm (S3 ) were evaluated during rabi season under irrigated condition. The results revealed that, castor crop grown well during Rabi season under irrigated condition. It is mainly due to the reason that, in Rabi sown crop there is no incidence of Botrytis gray mold disease and also cool dry season promotes seed setting in castor which results higher seed yield was obtained. Hybrids performed better in wider spacing because, they produce more number of spikes and effective spike length in castor. This is mainly due to in wider spacing, there is lesser competition between the plants. In the nutshell, hybrid YRCH 1 with a spacing of 120 x 120 cm recorded 19 per cent higher seed yield (2572 kg ha-1) than closer spacing of 90 x 90 cm (2157 kg ha-1) under irrigated condition

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