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Study on heterosis in hybrid rice [electronic resource].

By:

Sayed, A. I. H

Contributor(s):

Language: English Summary language: Arabic Description: p.110-126Other title:

دراسة علي قوة الهجين في الأرز الهجين [Added title page title]

Uniform titles:

Journal of agricultural research Kafrelsheikh Univeristy, 2011 v. 37 (1) [electronic resource].

Subject(s):

Hybrid rice -- Research

Online resources:

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In: Journal of Agricultural Research Kafrelsheikh Univeristy 2011.v.37(1)Summary: Studies of heterosis of five cytoplasmic male sterile lines and seven Egyptian testers ( restorers) were estimated using line x tester analysis for some agronomic yield and its components and panicle characters to get useful information for hybrid rice breeding program in Egypt. Hybrids with a yield advantage of 15% over the highest yielding check variety Giza 178 were considered as promising. Among 35 hybrid combinations, 10 were the most promising, IR 68897A x GZ 5121R, JR 69625Ax PR 2, IR 68888A x IR 25571R. IR 68888A x Giza 182R, IR 8897Ax PR 2, IR 69625Ax VHR 3, G 46A x Giza 178R , G 46A x Giza 182R. IR 69625A x Giza 178R and G46A x IR 25571 R. . Abbreviations:Cytoplasmic male sterility (CMS},Heterosis ,filled grains panicle⁻¹ (FG/Pn), 100- grain weight (GW), days to heading (HDG), plant height (Ht), panicles planr1 (Pn/P), panicle length (PnL), panicle weight (PnW), spikelet fertility % (SpFert%), tillers planr⁻¹ (Ti/P), wild abortive (WA) and grain yield / m² (Yld/m²).

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Studies of heterosis of five cytoplasmic male sterile lines and seven Egyptian testers ( restorers) were estimated using line x tester analysis for some agronomic yield and its components and panicle characters to get useful information for hybrid rice breeding program in Egypt. Hybrids with a yield advantage of 15% over the highest yielding check variety Giza 178 were considered as promising. Among 35 hybrid combinations, 10 were the most promising, IR 68897A x GZ 5121R, JR 69625Ax PR 2, IR 68888A x IR 25571R. IR 68888A x Giza 182R, IR 8897Ax PR 2, IR 69625Ax VHR 3, G 46A x Giza 178R , G 46A x Giza 182R. IR 69625A x Giza 178R and G46A x IR 25571 R. . Abbreviations:Cytoplasmic male sterility (CMS},Heterosis ,filled grains panicle⁻¹ (FG/Pn), 100- grain weight (GW), days to heading (HDG), plant height (Ht), panicles planr1 (Pn/P), panicle length (PnL), panicle weight (PnW), spikelet fertility % (SpFert%), tillers planr⁻¹ (Ti/P), wild abortive (WA) and grain yield / m² (Yld/m²).

Summary in Arabic.

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