Influence of Seed Coat Permeability of the Rate of Cottonseed Deterioration

J.S. Taft, J.C. Delouche, and C.C. Baskin


 
ABSTRACT

Field deterioration and deterioration during simulated weathering of cotton seed was studied using four cultivars: CAMD-E, a MAR variety; DPL 15N, a naked seeded type; LA 901, a hardseed experimental strain and Stoneville 213 (STV 213) a commercial variety.

Seeds of LA 901 maintained viability (germination plus hardseed) at 90% of higher during an 80 week field exposure period. viability of seed of the other three cultivars declined from the 90% level to the mid-70% level during this period.

In simulated weathering LA 901 maintained viability of 80 +% during a 14-day period while viability of the other three cultivars declined to 31% to 61%. The rate of water absorption of seed of LA 901 was similar to that of CAMD-E for the first 28 hours while STV 213 and DPL 15N were much higher. During simulated weathering seed moisture contents were significantly lower for LA 901 at 4 and 6 days but were not significantly different for the remainder of the 14-day period. After 14 days simulated weathering LA 901 was significantly higher in viable seed than the other cultivars, followed by STV 213, DPL 15 N and CAMD-E respectively.



Reprinted from 1988 Proceedings: Beltwide Cotton Production Research Conferences pp. 86 - 88
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998