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Variation and Selection for Preharvest Seed Dormancy in Safflower 1
Author(s) -
Zimmerman L. H.
Publication year - 1972
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/cropsci1972.0011183x001200010011x
Subject(s) - carthamus , biology , germination , dormancy , preharvest , seed dormancy , agronomy , horticulture , chilling requirement , botany , medicine , postharvest , traditional medicine
Selection for preharvest seed dormancy had two aspects: selection for low or no germination in the head at maturity, followed by selection for short‐term seed dormancy as shown by high germination after a period of seed storage. No domestic safflower ( Carthamus tinctorius L.) had 20% or less germination in the head; however, a high frequency of wild Carthamus species did. Short‐term dormancy was also found in wild species. Selections of Carthamus palaestinus Eig, which readily interbreed with domestic safflower, had as little as 7% germination with seeds stored for 3 weeks after harvest and as much as 100% with seeds stored for 19 weeks.