DROUGHT TOLERANCE OF ANTHER CULTURE DERIVED RICE LINES | ||||
| Journal of Plant Production | ||||
| Article 14, Volume 5, Issue 4, April 2014, Page 723-733 PDF (314.19 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2014.53893 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| A. A. Abd Allah1; M. M. Gaballah1; Aml E. A. El - Saidy2; M. H. Ammar1 | ||||
| 1Rice Research and Training center, Field Crops Res. Institute, ARC, Giza | ||||
| 2Department of Seed Tech. Res., Field Crops Res. Institute, ARC, Giza | ||||
| Abstract | ||||
| Five single crosses were done between the drought tolerance genotypes and traditional varieties that have highly yielding potential. The forty anther culture derived lines obtained from five crosses viz., Giza 177 x IET 1444, Giza 177 x Yun Len 4, Sakha 101 x IRAT 112,Sakha 103 x IET 1444 and Sakha 103 x Suweon 349 . The best five of diploid lines were selected to evaluate under drought and normal conditions and their parents with IET1444 and Giza177 as drought tolerance genotype and sensitive genotype, respectively. So Field and laboratorial experiments were conducted at Sakha Farm Stations, Kafr EL-Shiekh and Seed Technology Research unit in Mansoura during 2012 and 2013 seasons. A randomized complete block design with three replications was used. The ordinary analysis of variance indicated highly significant differences among environments, genotypes and environments x genotypes interaction for chlorophyll content, days to heading, plant height, number of panicles plant-1, grain yield plant-1, germination characters seed protein percentage, seed oil percentage and total carbohydrate percentages traits studied in both environments (normal and drought). The results illustrated that intermediate to high estimates of genetic variance were obtained for days to heading, chlorophyll content, plant height , number of panicles plant-1 and grain yield plant-1. The phenotypic variance values indicated wide phenotypic variability among characteristics studied. Percentages of GCV were 2.18, 1.69, 5.20, 8.33, 4.70, 6.49, 3.31, 10.27, 8.47 and 28.80 % for days to heading, chlorophyll content, plant height , number of panicles plant-1 and grain yield plant-1 and 7.74, 6.83, 19.67, 19.25, 6.09 and 9.73, % for root length, shoot length and dry weight of 10 seedlings and 6.98, 8.52, 77.44, 14, 19.8, 14.16, 8.06 and 6.76, % for germination percentage, oil percentage, protein percentage and carbohydrate percentage under normal and drought environments, respectively. The heritability in all studied traits gave high percentages under normal and drought conditions. In general, number of panicles/plant and grain yield as well as protein percentage, carbohydrate percentage and germination percentage recognized as beneficial drought tolerance indicators and may be used as selection criteria in rice breeding program. . Also, that planting the genotypes Sakha103 x IET1444, Sakha103xSuweon349 and Giza 177 x Yun Len 4 may be considered the best parents for drought recovering ability and can be crossed to produce new genotypes with desirable characters related to drought tolerance. | ||||
| Keywords | ||||
| Rice (Oryza sativa L.); Germination; genotypes; drought; yield; Quality; Genetic variability | ||||
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