Utilizing two line system in hybrid rice (Oryza sativa L.) and potential yield advantage under Egyptian conditions
Journal Title: Agricultural Advances - Year 2017, Vol 6, Issue 3
Abstract
Photo-thermosensitive genic male sterile (PTGMS) lines of rice have tremendous potential in realizing further quantum yield and economical hybrid rice seed production cost. The study was conducted during two rice growing seasons of 2015 and 2016 at the Experimental Farm of the Rice Research and Training Center (RRTC), Sakha, Kafr El-Sheikh, Egypt. Ten hybrid rice combinations derived from hybridization of one elite and adapted Japonica PTGMS line (PTGMS-38) and ten Indica, Japonica and Indica Japonica genotypes along with two check (Giza 178 and Giza 179) were used to analyze the genetic parameters and standard heterosis for 10 traits. Highly significant positive standard heterosis over the best local check varieties Giza 178 and Giza 179 for grain yield/plant was observed in all hybrids. The hybrids, PTGMS-38 x Sakha 106 (H10), PTGMS-38 x GZ8479 (H9), PTGMS-38 x Chinese 2 (H8), PTGMS-38 x Giza 177 (H6) and PTGMS-38 x Sakha 101 (H7) with standard heterosis of 54.47, 54.03, 51.63, 50.98 and 49.24%, respectively over the best local check variety Giza 179 were considered as promising. Mean sum of squares due to genotypes showed significant differences for ten traits studied, indicating the presence of high genetic variability among the genotypes. The estimation of GCV was lower than the respective PCV, indicating the influence of environmental factor on the expression of the studied traits. Characters like, spikelet fertility percentage (99.12 and 47.21%), grain yield/plant (98.30 and 36.11%), plant height (99.20 and 35.28%), panicle weight (97.30 and 35.27%) and flag leaf area (89.32 and 31.97%) showed high heritability coupled with moderate genetic advance, suggesting that selection for the improvement of these characters may be rewarding and also greater role of non-additive gene action and suggesting heterosis breeding could be used to improve these characters. Based on ten studied characters, the genotypes were grouped into three clusters at 0.98% similarities coefficient.
Authors and Affiliations
Galal Anis| Rice Research and Training Center, Field Crops Research Inst., Agric. Research Center, Egypt., Hamdi El-Mowafi| Rice Research and Training Center, Field Crops Research Inst., Agric. Research Center, Egypt., Ahmed El-Sherif| Rice Research and Training Center, Field Crops Research Inst., Agric. Research Center, Egypt., Haytham Freeg| Rice Research and Training Center, Field Crops Research Inst., Agric. Research Center, Egypt., Arafat El-Sayed| Rice Research and Training Center, Field Crops Research Inst., Agric. Research Center, Egypt., Ayman EL Sabagh*| Agronomy Department, Faculty of Agriculture, Kafrelsheikh University, Egypt.
Keywords
Related Articles
- EP ID EP598
- DOI 10.14196/aa.v6i3.2375
- Views 477
- Downloads 27
Seroprevalence of Haemoprotozoan diseases in ruminants of Kashmir valley
The study was designed to investigate the seroprevalence of haemoparasites (Babesia, Anaplasma and Theileria) among ruminants from Kashmir valley for a period of two years. A total of 585 blood samples were collected f...
Isolation of fungi associated with dead-in-shell chick embryo in hatcheries
The present work was carried out to isolate and identify fungi species present in dead-in-shell chick embryo. A total of three thousand dead-in-shell embryonated chicken eggs pooled into 300 eggs (10 eggs per group) we...
Study the effects of iron nano chelated fertilizers foliar application on yield and yield components of new line of whea
In order to study the effects of iron nano chelatedfertilizers foliar application on yield and yield components of new line ofwheat cold region of Kermanshah provence this study was conducted for one year (2012) in the...
Determinants of loan repayment of livestock farmers under agricultural credit guarantee scheme (A.C.G.S) in Etche local
This study examined the determinants of loan repayment of livestock farmers under the Agricultural Credit Guarantee Scheme (ACGS) in Etche Local Government Area of Rivers State, Nigeria. Simple random sampling techniq...
Effects of humic acid and organic matter on quantitative yield and macro-element absorption in rice (Oryza sativa L.)
This research intended to study the effects of various levels of humic acid and organic matter forming the substrate for rice seeds of the Tarom cultivar to germinate and for seedlings to grow. For this purpose, an exp...