Document Type : Original research
10.12816/ejpb.2023.344413
Abstract
The new soybean cultivar Misr 10 has been developed by Food Legumes Research Department and was released for high yield potential under natural infestation with cotton leaf worm. Crossing and evaluation of generations were carried out from 2005 to 2011 to produce parental genotypes with high productivity. Twenty six field trials have consisted of two preliminary yield trials, four promising yield trials, eight advanced yield trials, six on،farm trials, two cotton leaf worm trials, and four Value of Cultivation and Used (VCU) trials at 14 locations included eight Agricultural Research Stations (Sakha, Nubaria, Etai El،Baroud, Gemmiza, Mallawi, Sids, Shandweel, and the New Valley) and six governorates (El،Behira, El،Menofia, El،Sharkia, Beni Sweif, El،Menya, and Assuit) from 2012 to 2021 to release Misr 10 cultivar. For each trial, genotypes were distributed in randomized complete blocks design in each location and replicated thrice. Across all seasons, an average of seed yield per fad of each trial and insect assemblages on soybean leaves trial were statistically analyzed as a split split plot design in randomized complete blocks arrangement replicated thrice. Seasonal effects were assigned to the main plots, locations were allocated to the sub،plots, and genotypes were distributed in the sub sub،plots. The results showed that seed yield of genotypes were not affected significantly by seasonal effects or their interactions in the combined data for all trials. In the preliminary yield trials, Sakha location gave an increase in seed yield per fad by 10.62% compared to Etai El،Baroud location. With respect to advanced yield trials, Sakha, Nubaria, Etai El،Baroud, Gemmiza, Mallawi, Sids, and Shandweel locations gave an increase in seed yields per fad by 47.33, 47.25, 37.81, 36.75, 33.63, 17.55, and 2.87%, respectively, compared to New Valley location. In regard to on،farm trials, El،Behira, El،Menofia, El،Sharkia, Beni Sweif, and El،Menya locations gave an increase in seed yields per fad by 24.18, 20.50, 16.15, 11.13, and 5.75%, respectively, compared to Assiut location. With regard to VCU trials, Sakha, Etai El،Baroud, and Mallawi locations gave an increase in seed yields per fad by 10.12, 10.55, and 4.49%, respectively, compared to Sids location. Misr 10 gave a significant increase in seed yield per fad by 41.83% in preliminary yield trials, 23.03% in promising yield trials, 23.75% in advanced yield trials, 20.90% in on،farm trials, and 21.99% in VCU trials compared to Giza 111. The interaction between locations and genotypes did not affect significantly Misr 10, Giza 111, and Crawford for all trials. Misr 10 was more tolerant to cotton leaf worm infestation by 22.40% than Giza 111. No significant correlation was detected between the seed yield of Misr 10 and infestation with cotton leaf worm at the Sakha location (r=0.177) or Etai El،Baroud location (r=0.333). It can be recommended planting of Misr 10 on the commercial scale, with an increase in seed yield by 0.296 t/ fad (the combined data of on،farm trials) and a high tolerance to cotton leafworm infestation compared to the commercial cultivar Giza 111.
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