PERFORMANCE OF ELITE AROMATIC RICE VARIETIES UNDER DIFFERENT SOWING DATES UNDER EGYPTIAN CONDITION | ||
| Journal of Plant Production | ||
| Article 11, Volume 3, Issue 2, February 2012, Pages 311-333 PDF (676.71 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2012.84057 | ||
| Authors | ||
| T. F. Metwally1; M. M. El-Malky1; A. A. Glelah2; A. S. Gharieb1 | ||
| 1Rice Research and Training Center, Sakha, Kafr El-sheikh, Egypt | ||
| 2Agronomy Dept., Fac. Agric., Kafrelsheikh University, Egypt. | ||
| Abstract | ||
| Two field experiments were carried out at the farm of Rice Research and Training Center (RRTC), Sakha, Kafr El-Sheikh, Field Crops Research Institute (FCRI), Agricultural Research Center (ARC), Egypt, during 2008 and 2009 seasons, to evaluate some promising aromatic rice varieties (Egyptian Yasmin, IR77510-88-1-3-3, IR78530-45-3-1-3, IR 74052-177-3-3, IR 71137-51-2 and IR65610-38-2-4-2-6-3) under different sowing dates (April 24th, May 10th, May 24th and June 10th). The obtained results showed that rice plants sown on the second date (May 10th) surpassed those which sown on the late date of sowing (June 10th) in plant height, leaf area index, dry matter accumulation (g m-2), tillers number m-2, panicle number m-2, number of filled grains panicle-1, 1000–grain weight, straw yield and grain yield as well as aromatic level in both seasons. There was no significant difference between rice sown on the April 24th or May 10th in the most studied traits. Delay in sowing date significantly increased unfilled grains %, protein % and amylose content % in the two seasons. Aromatic rice varieties varied significantly in most measurements of growth, grain yield and yield attributes, in both seasons. Plants of the Egyptian Yasmin variety having the highest values in the most mentioned traits among the other tested varieties in the two seasons. Plants of Egyptian Yasmin in the two seasons and IR 77510 in the first season produced the greatest grain yield with high aroma level. Plants of IR 65610 variety produced the lowest grain yield in the two seasons. Concerning correlation coefficient among studied characters, grain yield had highly significant positive effect with 1000 grain weight and number of grains per panicle and significant positive with number of panicles m-2. It can be concluded that the optimum sowing date of Egyptian Yasmin variety is April 24th and May 10th while, sowing date of May 10th is the one optimum for IR 77510, IR 78530 and IR 71137. Generally aromatic varieties i.e. Egyptian Yasmin, IR77510-88-1-3-3, IR78530-45-3-1-3, IR 74052-177-3-3, IR 71137-51-2 and IR65610-38-2-4-2-6-3 could be recommended to be sown in April 24th and May 10th. | ||
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