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in
| Title : |
Genetic varieation, heritability and stability analysis of drought tolerant rice (Oryza sativa L.) varieties under rainfed lowland drought stress at reproductive stage in Nepal |
| Material Type: |
printed text |
| Authors: |
Ram Baran Yadaw ; Shalabh Dixit ; Kumar, Arvind ; Surya Kanta Ghimire ; Anitha Raman, Author ; Mishra, K.K., Author ; Shambhu Prasad Khatiwada, Author ; Resham Bahadur Thapa, Author |
| Pagination: |
97-106 p. |
| Languages : |
English (eng) |
| Keywords: |
Rice ; GxE interaction Stability Heritability Rainfed lowland drought stress GCV Genetic Advance(%) |
| Abstract: |
In order to compute the genetic variability, genetic advance, GCV, PCV, path coefficient and
GxE interaction, 23 advance breeding lines of rice crop developed from International Rice
Research Institute Los Banos Philippines including two broad drought susceptible and two
moderately drought resistant checks were tested for days to flowering, grain yield, harvest
index and plant height at National Rice Research Program, Hardinath, Dhanusha and
Regional Agricultural Research Station Nepalgunj in wet season 2010 and 2011. A highly
significant variability of GxE interaction was observed in all traits; indicating breeders to
focus on selection of stable lines over the environments. The heritability of 0.61 was found in
grain yield under rainfed drought stress at reproductive stage which indicates yield per se
could be considered as direct selection criterion. Genotypes IR 79906-B-1 92-2-3, IR 81896-
B-B-74-B, IR 79478-67-3-3-2, IRRI123 and IR 80312-6-B-3-2-B were found highly stable
with minimum or close to unity of regression CJff(i) and regression coefficient values ofAi· |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=871 |
in
Genetic varieation, heritability and stability analysis of drought tolerant rice (Oryza sativa L.) varieties under rainfed lowland drought stress at reproductive stage in Nepal [printed text] / Ram Baran Yadaw ; Shalabh Dixit ; Kumar, Arvind ; Surya Kanta Ghimire ; Anitha Raman, Author ; Mishra, K.K., Author ; Shambhu Prasad Khatiwada, Author ; Resham Bahadur Thapa, Author . - [s.d.] . - 97-106 p. Languages : English ( eng) | Keywords: |
Rice ; GxE interaction Stability Heritability Rainfed lowland drought stress GCV Genetic Advance(%) |
| Abstract: |
In order to compute the genetic variability, genetic advance, GCV, PCV, path coefficient and
GxE interaction, 23 advance breeding lines of rice crop developed from International Rice
Research Institute Los Banos Philippines including two broad drought susceptible and two
moderately drought resistant checks were tested for days to flowering, grain yield, harvest
index and plant height at National Rice Research Program, Hardinath, Dhanusha and
Regional Agricultural Research Station Nepalgunj in wet season 2010 and 2011. A highly
significant variability of GxE interaction was observed in all traits; indicating breeders to
focus on selection of stable lines over the environments. The heritability of 0.61 was found in
grain yield under rainfed drought stress at reproductive stage which indicates yield per se
could be considered as direct selection criterion. Genotypes IR 79906-B-1 92-2-3, IR 81896-
B-B-74-B, IR 79478-67-3-3-2, IRRI123 and IR 80312-6-B-3-2-B were found highly stable
with minimum or close to unity of regression CJff(i) and regression coefficient values ofAi· |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=871 |
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