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Fall Dormancy of Five F 1 Medicago sativa L. Populations, Two Reciprocal F 1 Populations, and Respective Parents 1
Author(s) -
Knipe W. J.,
Stockton L. M.
Publication year - 1977
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1977.0011183x001700020024x
Subject(s) - biology , dormancy , medicago sativa , cultivar , habit , reciprocal , agronomy , medicago , botany , horticulture , germination , genetics , psychology , gene , psychotherapist , linguistics , philosophy
When crossing alfalfa ( Medicago sativa L.) possessing different favorable agronomic traits but different fall dormancies it would be desirable to accurately predict the relative fall dormancy of the F 1 . This requires knowledge of inheritance of fall dormancy. Five dormant cultivars were crossed to one of two nondormant cultivars and the seven parent populations were intracrossed. Reciprocal crosses were made in two cases. One hundred plants from each intracross and intercross were spaced planted into the field and growth of each plant was measured in late August, October, and December. Plant growth was used to estimate dormancy response. Most F 1 populations closely resembled their respective midparent values; however, some did not. When these deviations occurred, non‐dormant growth habit appeared dominant in some crosses and recessive in others. These F 1 deviations from the midparent were not consistent across dates. Reciprocal effects were significant on some dates but were also not consistent.