Registration of 'UA 4805' soybean

Registration of 'UA 4805' soybean

2006

A:PS

'UA 4805' soyabean (Glycine max), which originated from an individual F4 plant selection from the cross 'Hartz 5545' x 'KS 4895', was developed by the Arkansas Agricultural Experiment Station. It was released as a late Maturity Group IV conventional cultivar in February 2005 because of its high yield potential, good standability, shattering resistance and resistance to several important diseases in the mid-South. UA 4805 gave significantly higher seed yield than the control cultivar, Manokin, in Arkansas State Variety Trials (2003-04) and USDA Southern Regional Preliminary (2001) and Uniform Group IV-S Tests (2002-03). It is a determinate cultivar with a relative maturity of 4.8, maturing 1 to 3 days earlier than Manokin. It has purple flowers, grey pubescence and tan pod walls. Plant height of UA 4805 is similar to Manokin. Seeds have yellow cotyledon with dull yellow seed coats and buff hila with seed size (11.4 g/100 seeds) being slightly smaller than that of Manokin (12.2 g/100 seeds). Seed protein content of UA 4805 (417 g/kg) is 13 g/kg higher than that of Manokin, whereas oil content (195 g/kg) is 11 g/kg lower than that of Manokin. UA 4805 is resistant to southern stem canker (Diaporthe phaseolorum f.sp. meridionalis), sudden death syndrome (Fusarium solani f.sp. glycines) and frogeye leaf spot (Cercospora sojina). It is moderately resistant to root knot nematode (Meloidogyne arenaria and M. incognita).

v.46(2):974, CROP SCIENCE

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