> as lemmas
polycross
polycross n. 
/ˈpɑliˌkrɑs/ Agriculture a cross made by planting two or more mutually fertile varieties together and allowing free natural cross-pollination; frequently attributive.
Brit. /ˈpɒlɪkrɒs/
, /ˈpɒlɪkrɒs/U.S. /ˈpɑliˌkrɔs/
, /ˈpɑliˌkrɔs//ˈpɑliˌkrɑs/ΘΚΠ
the world > plants > variety or species > [noun] > cross or hybrid
mule1728
bigener1817
graft-hybrid1868
nothomorph1939
polycross1946
metis1974
1946 Amer. Naturalist 80 444 The combining ability of clonal lines..may be tested by the so-called polycross method.
1977 Crop Sci. 17 909/2 Twenty-one clones whose polycross progenies ranked high for rate of seedling emergence..were selected for this study.
1992 Theoret. & Appl. Genetics 83 752 (title) Frequency-dependent male reproductive success in a polycross of Douglas fir.
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as lemmas
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