Hybrid Rice Seed Production as Affected by Sowing Dates, Seedling Ages and Male Rows Direction | ||
| Journal of Plant Production | ||
| Article 13, Volume 11, Issue 7, July 2020, Pages 661-667 PDF (956.1 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2020.110578 | ||
| Authors | ||
| H. Sh. Hamad; S. M. Bassiouni* | ||
| Rice Research Department, Field Crops Research Institute, Agricultural Research Center, Egypt. | ||
| Abstract | ||
| Two field experiments were conducted at the Experimental Farm of Sakha Agricultural Research Station, Kafr EL Sheikh, Egypt during 2018 and 2019 rice growing seasons, to study the effect of three sowing dates viz; April 20th, May 5th and May 20th, three seedling ages namely; 20, 30 and 40 days and male rows direction; one and two directions on out crossing of hybrid rice seed production of the CMS line IR69625A crossed by the male line Giza 178R. Split-split plot design with three replications was used. The main plots were devoted to the sowing dates, while the seedling ages were arranged in the sub plots and male rows direction were arranged in the sub-sub plots. The results showed that the interaction between sowing dates and seedling ages had a significant effect on number of days to 50% heading, plant height (cm), panicle length (cm) and panicle exertion (%), however, these traits didn't significantly affected by male rows direction. On the other hand, panicle weight (g), number of filled grains panicle-1, seed set (%), harvest index (%) and seed yield (t ha-1) were significantly affected by sowing dates, seedling ages and male rows direction. The interactions among sowing dates, seedling ages and male rows direction had highly significant effect on seed yield. The highest values of seed yields were obtained when rice plants were sowing on April, 20 with seedling age 20 days in two rows direction during 2018 and 2019 seasons. | ||
| Keywords | ||
| Hybrid; Rice; (CMS); Sowing dates; seed set | ||
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