Developing New Varieties. Larry Darrah Research Geneticist and Adjunct Professor USDA-ARS Plant Genetics Research Unit and Department of Agronomy, UMC. Self- vs. cross-pollinated crops. Self-pollinated: Uses pollen and egg from the same plant to produce seed. Examples—Wheat and soybeans.
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Research Geneticist and Adjunct Professor
USDA-ARS Plant Genetics Research Unit
and Department of Agronomy, UMC
You betcha it does!
Lets look at corn yields over time.
Cycle 0 and B73 x Mo17 Cycle 6 low and high
U.S. trefoil has persistence problems because of root and crown rot.
U.S. varieties lack rhizomes.
Paul Beuselinck, USDA-ARS, Columbia, collected a rhizomatous birdsfoot trefoil in Morocco and has bred it into U.S. germplasm resulting in release of ARS-2620.
Grazing studies show increased persistence in pastures.
Yes, this approach seems to be self-limiting (funnel), but it has worked well thus far in many crops. See the following data from the Kenya Maize Breeding Project: