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Criteria for the selection of taxa used in the crossing experiments
Species used in interspecific hybridizations 3 Intraspecific variation
Poa scabrellapratensis Combinations
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aberrants agronomic altitudinal stations altitudinal transplant stations ampla parent apomictic derivatives apomictic hybrid derivatives apomictic lines apomixis biotype Blacksburg bunchgrass California Carnegie Accession characteristics chromosome number cloned transplants cm high combination compressa Crescent Mills cross Poa ampla culms cytological ecotypes elevation environments F2 progeny F2 segregants failed to survive female parent field tests figure floccose forms of Poa genetic grown at Stanford Harlan Herbage Hiesey histograms hybrids were obtained individuals Jens Clausen Leevining Lemmas ligules meters miles Mono morphological nursery parental lines Plant Breeding Poa ampla Albion Poa ampla-pratensis Poa pratensis Poa scabrella pollination polyploid pratensis parent progeny tests proved Pullman quadruple hybrids recombinations relative growth performance response index values Results from crossing rhizomes scabrella Las Posas scabrella parent scabrella-pratensis seed fertilities seedlings sexual Soil Conservation Service space-planted stations at Stanford Stebbins strain test stations Timberline Tuolumne U.S. Soil Conservation variable vegetatively cloned Volbu Watsonville weak widely