Screening of soybean (Glycine max (L.) Merrill) genotypes for resistance to lodging and pod shattering

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Research Paper 01/05/2017
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Screening of soybean (Glycine max (L.) Merrill) genotypes for resistance to lodging and pod shattering

Augustine Antwi-Boasiako
Int. J. Agron. Agri. Res.10( 5), 1-8, May 2017.
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Soybean yield reduction has been attributed to many factors including lodging and shattering. Detection of soybean genotypes/varieties that are tolerant to lodging and shattering would be of help to farmers and breeder in selecting variety for cultivation or cultivar development. Therefore, this study was conducted between July and November, 2014 growing season to evaluate soybean genotypes for lodging and pod shattering resistance at Tampola, Navrongo in the Kassena Nankana District in the Upper East Region of Ghana. The soybean genotypes used for the study were thirty four, consisting of 32 breeding lines and two local varieties. The field experiment was laid out in randomized complete block design (RCBD) with three replications. Pod shattering screening was done using oven dry method in the laboratory. Lodging was scored using International Institute of Tropical Agriculture (IITA) descriptors when the crop attained at R8 (full maturity) when 95 % of the pods have reached mature pod colour. Six genotypes, namely SIT-M TGx1904-6F, SIT-E TGx1835-10E, SIT-M TGx1987-40F, TGx1903-7F, SIT-E TGx1448-2E and ANIDASO were found to be moderately resistant to pod shattering. It was revealed that 53 % of the genotypes shown either erectness or slight lodging. Soybean genotypes SIT-M TGx1904-6F, SIT-M TGx1987-40F, SIT-E TGx1448-2E and ANIDASO were identified to have some degree of resistance to lodging and shattering and could also be incorporated in soybean breeding programmes for improvement.


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