Heterosis and Combining Ability of some Colored Rice Genotypes for Yield Characteristics and Grain Micronutrient Content Using Line X Tester Analysis | ||||
| Journal of Plant Production | ||||
| Article 7, Volume 12, Issue 6, June 2021, Page 635-643 PDF (988.11 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2021.78615.1032 | ||||
 View on SCiNiTO | ||||
| Author | ||||
fatma A. hussein 
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| Rice Research Department -Field Crops Research Institute- Agriculture Research Center- Egypt | ||||
| Abstract | ||||
| Eight exotic colored rice lines and four testers were crossed in line x tester. The resulted 32 F1 hybrids along with their parents were evaluated in a randomized complete block design (RCBD) with three replications at the Experimental Farm of Rice Research Department, Sakha Agricultural Research Station, Kafr El-Sheikh, Egypt during2019 and 2020 growing season, to assess mean performance, general (GCA) and specific (SCA) combining ability as well as identify type of gene action controlling the inheritance of the studied traits. The non-additive gene effects had an important role in the inheritance of all the studied traits more than the additive gene effects. The parental lines Dullar, Black Rice and IRBLKM-TS-[CO] were identified as a good combiners for earliness and KWANG CHANG Ai, Black Rice and Sakha 101 for shortness. Whereas, parental lines: Dullar, Red Rice, IRBLKM-TS-[CO], IRBLTA- CT and Sakha 108 were the best general combiners for grain yield and its components. The hybrid combinations Dullar x Giza 178, Red Rice x Giza 178, B40 x Giza 178, KWANG CHANG Ai x Sakha 108, Dullar x Giza 177 and IRBLTA-CT2 x Sakha 108 had the best SCA effects for grain yield as well as one or more of its components. Moreover, the hybrids Red Rice x Giza 178, IR71567-108-1-2 x Giza177 and B40 x Sakha108 recorded the highest value in Fe and Zn concentrations in grains. These hybrids could be used for improving grain yield and micronutrient content particularly Fe and Zn in rice breeding programs. | ||||
| Keywords | ||||
| Rice; Color rice; combining ability; heterosis; nutritional value | ||||
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