Italian ryegrass growth and production from
positionally selective applications and sublethal rates of a
nonselective herbicide were compared to growth and
production when treated with diuron applied preemergence as
a broadcast treatment and safened by activated carbon
applied over the crop row. In the positionally selective
treatments, herbicide spray was...
Some biochemical activities in embryo or seedling of
germinating rice (Oryza Sativa L.) seed were studied to explain the
effects of suboptimum (20 C), optimum (30 C), and supraoptimum (40 C)
temperatures on seed germination and seedling growth. It was observed
that 40 C slightly speeded up seed germination but...
Seed yield in perennial ryegrass is the product of yield components
that develop during the life of the plant. Crop yield potential is
defined by the number of fertile tillers, spikelets per spike, and
florets per spikelet. It has been shown that perennial ryegrass
realizes only a small percentage of...
The effects of scald epidemics, induced by Rhynchosporium secalis
(Oud.) Davis, on the yield and quality of winter malting barley have not been
reported. The principal objective of this investigation was to assess yield and
quality losses in resistant and susceptible winter barley genotypes in diverse
environments of the Pacific...
Septoria leaf blotch of wheat is a major biotic factor limiting the grain yield.
To determine the nature of inheritance involving selected genotypes, three resistant
semidwarf spring wheat lines exhibiting durable global resistance and one susceptible
cultivar were crossed in all possible combinations, excluding reciprocals. Parents, Fl,
F2, and F3...
Microsatellites or simple sequence repeats (SSRs) are highthroughput sequence based DNA markers that have been exploited as tools for measuring genetic distance and diversity in evolutionary studies, protection of intellectual property, genetic resource conservation management, cultivar identification and molecular breeding of crop plants. We isolated and sequenced 1095 clones from...
Seed moisture is a primary factor influencing seed quality during harvesting, storage, and marketing of grass seed. However, the Association of Official Seed Analysts' Rules for Testing Seeds do not contain methods for moisture testing. The oven methods in use by seed testing laboratories in the U.S. are diverse and...
The tissue and substrate degradational enzymes, acid hydrolases,
in endosperm were studied in order to discern the mechanism of seed
shriveling in triticale (XTriticosecale Wittmack).
Acid hydrolases in crude extract of 7-week-old developing
endosperm of 2 lines each of triticale with shriveled (6TB,JZBS) and
plump seeds (6TA, RBP) were successfully...
Chewings fescue [Festuca rubra L. subsp. fallax (Thuill.) Nyman] is a desired turfgrass with dense sod forming capabilities and superior shade tolerance. Thermal residue management (open-field burning) has traditionally been used to remove post-harvest residue and maintain seed yield over the life of the stand. However, alternative non-thermal residue management...
Field study with 5 tall fescue genotypes treated at the vegetative
growth stage, with 0, 0.28, 0.56, and 0.84 kg/ha of mefluidide
was initiated in July, 1980. The regrowth of these plants were again
treated at the booting growth stage in April, 1981, with the same
rates of mefluidide as...