scholarly journals Genetic parameters of variability, correlation and path-coefficient studies for grain yield and other yield Attributes among rice blast disease resistant genotypes of rice (Oryza sativa L.)

2011 ◽  
Vol 10 (17) ◽  
pp. 3322-3334 ◽  
Author(s):  
Selvaraj C Immanuel ◽  
Nagarajan Pothiraj ◽  
K Thiyagarajan ◽  
M Bharathi ◽  
R Rabindran
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Rice Blast ◽  
Genetic Parameters ◽  
Oryza Sativa L ◽  
Rice Blast Disease ◽  
Blast Disease ◽  
Path Coefficient ◽  
Yield Attributes ◽  
Resistant Genotypes

scholarly journals Identification of Microsatellite (SSR) and RAPD Markers Linked to Rice Blast Disease Resistance gene in Rice (Oryza sativa L.)

2011 ◽  
Vol 10 (17) ◽  
pp. 3301-3321 ◽  
Author(s):  
Selvaraj C Immanuel ◽  
Nagarajan Pothiraj ◽  
K Thiyagarajan ◽  
M Bharathi ◽  
R Rabindran
Keyword(s):  
Oryza Sativa ◽  
Disease Resistance ◽  
Resistance Gene ◽  
Rice Blast ◽  
Rapd Markers ◽  
Oryza Sativa L ◽  
Rice Blast Disease ◽  
Blast Disease ◽  
Disease Resistance Gene

scholarly journals Effect of dates and methods of winter rice (Oryza sativa L.) transplanting on relayed niger (Guizotia abyssinica) and soil health

2019 ◽  
Author(s):  
Anju Mala Deka ◽  
P. C. Bora ◽  
H. Kalita ◽  
A. S.N. Zaman ◽  
Pompi Saikia
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Conventional Method ◽  
Oryza Sativa L ◽  
Rice Cultivation ◽  
System Of Rice Intensification ◽  
Guizotia Abyssinica ◽  
Relay System ◽  
Yield Attributes ◽  
Available N

A field experiment was conducted to study the effect of dates of transplanting under different methods of cultivation on productivity of winter rice (Oryza sativa L.) and their effect on rice-niger (Guizotia abyssinica) relay system at Regional Agricultural Research Station, Shillongani Nagaon, Assam during kharif-rabi seasons in the year 2014-15 and 2015-16. Rice transplanted on 20 June recorded significantly higher yield attributes and grain yield of rice (59.19 q/ha) as compared to the later dates of transplanting, and it was followed by 5 July- transplanted rice. Transplanting on 20 June resulted in higher values in respect of yield attributes, yield of relayed niger, rice equivalent yield (REY) of rice- niger relay system (75.68 q/ha), NPK uptake by rice and niger as well as soil fungal and bacterial population after harvest of rice and niger. System of Rice Intensification (SRI) recorded significantly higher value of yield attributes and grain yield of rice (60.34q/ha) as compared to conventional method. In case of relayed niger, yield attributes, seed yield and REY were found higher under SRI method of rice cultivation. Under SRI method, higher uptake of NPK by rice and niger and higher soil fungal and bacterial populations after harvest of rice and niger were observed as compared to conventional method. However, conventional method of rice cultivation recorded significantly higher values of soil available N, P2O5 and K2O content at the end of two year-crop cycle over that of SRI.

scholarly journals Genetic Variability And Character Associations In Irrigated Rice (Oryza Sativa L)

1970 ◽  
Vol 23 (2) ◽  
pp. 23-28 ◽  
Author(s):  
S Ghosal ◽  
PL Biswas ◽  
M Khatun ◽  
S Khatun
Keyword(s):  
Oryza Sativa ◽  
Genetic Variability ◽  
Grain Yield ◽  
Oryza Sativa L ◽  
Grain Weight ◽  
Path Coefficient ◽  
Genetic Advance ◽  
Thousand Grain Weight ◽  
Growth Duration ◽  
Irrigated Rice

Eighteen advanced breeding lines were evaluated for yield and yield contributing characters to observe their variability, associations and direct and indirect effect on yield during Boro season, 2009. All the tested characters showed significant variation. Effective tillers/m2 and spikelet sterility (%) had high genotypic variance, high heritability, high genetic advance and high genotypic coefficient of variation. Effective tillers/m2, panicle length (cm), thousand grain weight (g) and growth duration (days) showed significant positive association with grain yield. Path coefficient analysis also revealed that effective tillers/m2, thousand grain weight (g) and growth duration (days) had higher direct effects on yield (t/ha). All together with the genetic variability, correlation and path analysis revealed that effective tillers/m2, thousand grain weight (g) and growth duration (days) are the most important yield components in rice. Therefore, from the present study it could be suggested that emphasize should be given on these characters for the selection of genotypes for higher grain yield in irrigated rice.   Keywords: Rice (Oryza sativa L.); GCV; PCV; heritability; genetic advance; correlationDOI: http://dx.doi.org/10.3329/bjpbg.v23i2.9321 Bangladesh J. Pl. Breed. Genet., 23(2): 23-27, 2010

scholarly journals Grain yield and yield attributes response of four upland rice (Oryza sativa L.) promising lines to shade stress

2020 ◽  
Vol 454 ◽  
pp. 012188
Author(s):  
G R Sadimantara ◽  
E Febrianti ◽  
N W S Suliartini ◽  
G A K Sutariati ◽  
D N Yusuf ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Yield Attributes
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