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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Quantitative trait analysis of grain dormancy in wheat (Triticum aestivum L. Thell)

Bassoi, Manoel Carlos January 2001 (has links)
No description available.
2

A MODEL OF COTTON GERMINATION AND EMERGENCE

Wanjura, Donald Frank, 1938- January 1971 (has links)
No description available.
3

Effects of fruit maturity and after-ripening of seeds upon seed germination and viability in Cucurbita foetidissima HBK

Alves Costa, José Tarciso, 1942- January 1972 (has links)
No description available.
4

Pre-harvest sprouting tolerance of a synthetic hexaploid wheat (Triticum turgidum L. x Aegilops tauschii Coss.)

Rosa, Andre Cunha 04 January 1999 (has links)
Pre-harvest sprouting in wheat costs farmers millions of dollars every year. Pre-harvest sprouting tolerance (PST) has minimized this problem, but improvement of PST is still necessary. Synthetic hexaploid wheats (synthetics) have been used as sources of genes coding for many useful traits. Two studies evaluated the PST of a synthetic (Altar 84/Aegilops tauschii) and investigated its potential as a source of PST in crosses with wheat cultivars. The first study compared the synthetic with selected wheat checks for PST and with its parent Altar 84 for the germination response of these genotypes to controlled wetting treatments applied to field-grown intact spikes and threshed seed. Spikes were rolled in wet germination paper and the percentages of germinated seed were determined after seven days. Threshed seeds in Petri dishes were wetted with water and vegetative floral tissues (chaff) extracts. Germinating seeds were counted daily for 14 days. The synthetic was more tolerant than Altar 84 and was classified as moderately sensitive. The improved PST of the synthetic over Altar 84 was attributed to Aegilops tauschii. Seed dormancy and water-soluble substances in the chaff of the synthetic and other genotypes appeared to contribute to their PST. The second study used random inbred F��� lines obtained from single and backcrosses between the synthetic (red-seeded) and the sensitive wheat cultivars Opata F��� (red-seeded) and Bacanora 88 (white-seeded). Seed coat color and germination responses of the F5 lines subjected to a five-day spike wetting treatment were evaluated. Pre-harvest sprouting tolerance was moderately to highly inheritable and largely controlled by additive gene effects in the studied populations. An association between red seed coat color and PST was observed but white recombinant lines more tolerant than their sensitive parent were obtained. The synthetic can be used to improve wheats with red and white seed coats. The potential use of the synthetic as a PST source was discussed and a breeding strategy suggested. / Graduation date: 1999
5

Effect of certain salts on the germination of alfalfa and berseem clover seed

Khatib, Ismail Haris, 1938- January 1965 (has links)
No description available.
6

Studies on changes in the early stage of germination of glycine max (L.) Merr.

January 1985 (has links)
by Lee Yuen Chong. / Bibliography: leaves 112-131 / Thesis (M.Ph.)--Chinese University of Hong Kong, 1985
7

Factors affecting the germination of safflower seed (Carthamus tinctorius L.)

Bantayehu, Gelan, 1939- January 1965 (has links)
No description available.
8

Artificial germination of Sorghum vulgare Pers. Pollen

Humphrey, David Ford, 1934- January 1962 (has links)
No description available.
9

Germination, emergence, and seedling development of 16 cotton lines

Dabi, Gurmu, 1942- January 1974 (has links)
No description available.
10

Preharvest sprouting and post-anthesis development of hard winter wheat as affected by nitrogen nutrition

Morris, Craig Franklin. January 1984 (has links)
Call number: LD2668 .T4 1984 M67 / Master of Science

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