Solid matrix priming of soybean, corn and cowpea seeds.

Date

10-1992

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Pamela G. Fernandez

Abstract

The effectiveness of solid matrix priming or SMP on improving seed germinability (%G) and vigor [seedling length and seedling dry weight and first germination count (only for corn)] of soybean (Glycine max) and cowpea (Vigna unguiculata) which are prone to soaking injury and of corn (zea mays) was determined. Seeds of high (88-90%) and low (76-81%) initial germination, also referred to as high and low vigor seeds, respectively, were mixed with sawdust. carbonized bagasse and rice hull and wet with different amounts of water (1, 2.5 and 5% of the weight of seeds plus solid matrix) contained in a glass jar and incubated at room temperature for one, two and five days.

In general, all the crop seeds were effectively invigorated through SMP with one to two days incubation as indicated by improved percentage (%G) but more for low than high vigor seeds. Seedling length and dry weight, as vigor indices were also improved especially for low vigor seeds although their response to SMP varied. These indices were poorly correlated with germination SMP beyond one to two days reduced %G considerably.

Sawdust and rice hull as SMP media were found effective at all water levels tested incubated at one to two days. Carbonized bagasse, however, tends to reduce %G at 5% water level incubated beyond one day.

Seed moisture content before and during SMP was generally higher than in high vigor than low vigor seeds. During SMP, seed moisture content ranged from 13-16% after 4-8 hours incubation and at these levels. seeds are effectively primed or invigorated. Based on this study. It is recommended that in SMP of seeds, water levels should be kept at 1-5% and incubated not longer than two days.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1992 A42 O94

Document Type

Thesis

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