PERFORMANCE AND CLUSTERING OF SOME EGYPTIAN RICE GENOTYPES UNDER DIFFERENT SOWING DATES | ||
| Egyptian Journal of Plant Breeding | ||
| Volume 23, Issue 1, July and August 2019, Pages 223-238 PDF (693.56 K) | ||
| Document Type: Original research | ||
| DOI: 10.12816/ejpb.2019.256174 | ||
| Abstract | ||
| A two-year field experiment was carried out at the farm of the Rice Research and Training Center (RRTC), Sakha, Kafr El-Sheikh, Field Crops Research Institute (FCRI), Agricultural Research Center (ARC), Egypt, during 2016 and 2017 seasons. The experiment was conducted to study the effect of different sowing dates on the behavior of twenty four rice genotypes. Three dates of sowing, i.e. April 1st, April 15th and May 1st were used in 2016 and 2017 seasons. The twenty four varieties were laid out in a Randomized Complete Block Design with four replications in each sowing date in both seasons. A combined analysis was performed across sowing dates in each season. The studied characters were flag Leaf area (cm2) at heading, plant height (cm) at harvest and duration (day), number of panicles per hill, panicle length (cm), number of primary branches per panicle, number of filled grains per panicle, 1000-grain weight (g), grain yield (th-1) and grain quality characteristics (hulling, milling and head rice percentages). Most of the studied traits were affected significantly by sowing date, genotype and their interaction. Sowing date had significant or highly significant effects on all characters except hulling percentage in both the years. The highest values of most traits were obtained by sowing genotypes Giza179 and Sakha102 on April 1st or on April 15th. Clustering of varieties based on their performance under different sowing dates produced two large groups of genotypes; the first group included (Giza178, Sakha101 and GZ10101-5-1-1, GZ10333-9-1, Giza179 and Sakha102), which were the highest varieties in number of filled grains per panicle. On the other hand, the second group included the lowest genotypes in number of filled grains per panicle and divided into two sub group, the promising line (GZ10147-1-21) was in a branch alone. Delaying sowing date depressed grain yield and its attributes for all rice genotypes in the two seasons. | ||
| Keywords | ||
| Rice; Sowing date; Planting dates; Rice genotypes; Grain quality; Clustering | ||
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