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Soybean improvement in São Paulo: II- cross-pollination method

Three series of soybean crosses using the commercial varieties Abura X Mogiana, La 41-1219 X D 49-772 and La 41-1219 X Mogiana are reported. Five generations of the hybrid population were studied, part following the pedigree and part using the bulk method of selection. Using individual plant selection three promising lines (L-298, L-311 and L-356) were obtained. Line L-311 was selected due to its high yield, non-shattering and non-lodging characteristics, adequate height for combining, and suitable seed size, similar to that of the Mogiana variety. Lines L-326 and L-356 are also high yielding, resistant to the root-knot nematode and to lodging, and are non-shattering. The height is suitable for use of combines and the seed oil content is high. Line L-326 does not present cracks on the seed coat whereas all other selected lines still show this characteristic, although to a lesser degree than in the original variety Mogiana. Due to the promising results obtained with L-326, this line is being increased for other regional testing.


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