Document Type : Original research
10.12816/ejpb.2019.256163
Abstract
EHR3 (SK2151H), a short duration high yielding rice hybrid was developed through the hybridization between the CMS line Sakha1A and the restorer variety GZ9057-6-3-3-1 (Giza179) (Sakha1A × Giza179R) at hybrid Rice Research Program, Rice Research and Training Center, Sakha, Kafr El-Sheikh, Egypt and released by varieties release committee, Egypt, in 2018 for cultivation. This rice hybrid has been nominated as SK2151H then Egyptian Rice Hybrid 3 (EHR3). Before release as “EHR3”, it had completed four years (2013 through 2016) of National testing in the designation of SK2151H. EHR3 (SK2151H) had shorter growth duration (130.8 days) than EHR1 (134.9 days), Giza 178 (135 days), Sakha 101 (142.9 days) and Sakha 104 (135 days). In addition, it had heavy panicle weight (5.99 g), more number of spikelets and filled grains panicle-1. It gave 13.54 t/ha of grain yield with yield advantage of 3.14, 3.24, 3.26 and 3.35 t/ha with a superiority % of 30.19, 31.45, 31.71 and 32.87% over the commercial inbred rice cultivars, Giza 178, Giza 179, Sakha 101 and Sakha 104, respectively. The new rice hybrid EHR3 showed better grain quality attributed compared with, EHR1, Giza 178 and Giza 179 and hence, world have a better chance in consumers preference. Altogether with high yield potential and other agronomic performance it will have a good rank among commercial rice varieties. Tests conducted at plant protection program proved that the new rice hybrid EHR3, is resistant to blast and moderately resistant to stem borer.
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