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Physiology of Oil Seeds III. Response of Initially High and Low Germinating 1,2 Spanish‐type Peanut Seeds to Three Storage Environments
Author(s) -
Ketring D. L.
Publication year - 1971
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1971.00021962006300030026x
Subject(s) - germination , arachis hypogaea , horticulture , potassium , crop , chemistry , ethylene , biology , agronomy , organic chemistry , biochemistry , catalysis
Two lots of Spanish‐type peanut seeds ( Arachis hypogaea L. var. Starr) were compared for their ability to remain viable under three environmental treatments. Temperature and relative humidities for treatments A, B and C were 21 ± 3C and 50 ± 5%, 3 ± 2C and 80 ± 15% and 3 ± 2C and 20 ± 10%, respectively. Initial germination of seed lots 1 and 2 were 81 ± 3% and 30 ± 8%. Seeds from both lots were exposed to treatments for up to 7 months. At monthly intervals .454 to .908‐kg samples were placed in sealed containers. After about 8 months of storage, total germination, vigor, organic constituents and ethylene production by the seeds were compared for seeds from the sealed containers. Relative to their initial germniation, lot 1 seeds were reduced 4, 63, and 5% and lot 2 seeds 43, 93, and 57% in total germination within 2 months of storage when placed in treatments A, B and C, respectively. The proportion of vigorous seedlings were reduced 19, 81 and 33% for lot 1 and 50, 100 and 50% for lot 2 seeds after the same time and treatments. Inorganic analyses showed that lot 1 seeds contained more calcium, potassium and zinc than lot 2 seeds. Organic analyses indicated that there was a decrease in total extractable nucleic acids when the seeds were stored in treatment B. Ethylene production by the seeds at 48 hours of germination was reduced 80% and 90% for lot 1 and lot 2 seeds, respectively, in treatment B. The deleterious effects on germination, vigor, nucleic acids and ethylene production of the seeds was apparently caused by high relative humidity, since a lower relative humidity at the same or a higher temperature did not cause these effects.