บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Alleviation of imbibitional chilling injury in snap bean (Phaseolus vulgaris) seeds

Makoni, Rufaro Magnus.

Thesis of M.S., Michigan State University, 1989, 88 pages

1989

บทคัดย่อ

ALLEVIATION OF IMBIBITIONAL CHILLING INJURY IN SNAP BEAN (PHASEOLUS VULGARIS) SEEDS.

Coating snap bean seeds with antitranspirants, Vapor Gard, Wiltpurf, and a postharvest fruit wax, Pacrite 383, reduced imbibition at 5, 10, and 20C.  These waxes also reduced damage to cotyledons and axes and improved germination of imbibitionally chilled snap bean seeds in pots.  Raising the initial moisture content to 15-20% and 25-30% from 6-9% reduced damage to axes and cotyledons of snap beans chilled during imbibition.  Germination of snap beans chilled 24 hours during imbibition was improved by initial moisture contents greater than 15%.  Polyethylene glycol solutions of $-5$ and $-15$ bars reduced water uptake in the first four hours of imbibition at 5, 10 and 20C.  Priming solutions of $-5$ and $-15$ bars also reduced damage to cotyledons and axes and improved germination of seeds chilled during imbibition.  Assessment of damage by both staining with tetrazolium chloride and growth assays of the axis and cotyledon proved to be reliable methods.