scholarly journals Pregnancy diagnosis by seed germination inhibition test in mithun (Bos frontalis) cows

2011 ◽  
Vol 4 (1) ◽  
pp. 531-532
Author(s):  
P. Perumal P. Perumal ◽  
1985 ◽  
Vol 7 (2) ◽  
pp. 129-138 ◽  
Author(s):  
A.S. Grewal ◽  
A.L.C. Wallace ◽  
Y.S. Pan ◽  
N.W. Rigby ◽  
J.B. Donnelly ◽  
...  

1998 ◽  
Vol 8 (3) ◽  
pp. 317-329 ◽  
Author(s):  
Jorge J. Casal ◽  
Rodolfo A. Sánchez

AbstractThe control of seed germination by red and far-red light is one of the earliest documented phytochrome-mediated processes Phytochrome is now known to be a small family of photoreceptors whose apoproteins are encoded by different genes Phytochrome B (phyB) is present in dry seeds and affects germination of dark imbibed seeds but other phytochromes could also be involved Phytochrome A (phyA) appears after several hours of imbibition and mediates very-low-fluence responses PhyB and other phytochromes different from phyA mediate the classical low-fluence responses The phytochrome involved in high-irradiance responses of seed germination (inhibition of germination under continuous far-red) has not been unequivocally established, although phyA is the most likely candidate Phytochrome can affect embryo growth capacity and/or the constraint imposed by the tissues surrounding the embryo At least in some species, gibberellins participate in the signalling process In the field, phyA has been implicated in the perception of light during soil cultivations, and phyB would be involved in the perception of red/far-red ratios associated with the presence of gaps in the canopy This review describes recent advances in phytochrome research, particularly those derived from the analysis of germination in specific mutants, and their connection with traditional observations on phytochrome control of seed germination


2006 ◽  
Vol 48 (10) ◽  
pp. 1168-1176 ◽  
Author(s):  
Sheng Xu ◽  
Zhi-Sheng Sa ◽  
Ze-Yu Cao ◽  
Wei Xuan ◽  
Ben-Kai Huang ◽  
...  

1986 ◽  
Vol 64 (9) ◽  
pp. 1910-1915 ◽  
Author(s):  
Ramma Sawhney ◽  
Andrew I. Hsiao ◽  
William A. Quick

Freshly harvested seeds of three genetically nondormant populations of wild oat (Avena fatua L.) germinated readily in the dark at optimum temperatures. Direct or diffused light caused germination inhibition in seeds of all these populations. This light-induced germination inhibition was intensity dependent; the higher the light intensity, the greater the inhibition. Germination inhibition by light was accentuated by higher incubation temperatures, indicating an interaction between these two factors on the induction of secondary seed dormancy in genetically nondormant populations. This interaction may be of adaptive significance to the survival of nondormant populations, and reconciles some apparently conflicting reports in the literature.


2017 ◽  
Vol 32 (1) ◽  
pp. 51-59
Author(s):  
Plamen Marinov-Serafimov ◽  
Irena Golubinova ◽  
Diana Marinova

Allelopathic effects of cold water extracts of Cuscuta epithymum L. on seed germination and initial development of Medicago sativa L. varieties were investigated under laboratory conditions at the Institute of Forage Crops, Pleven, during 2016-2017. It was found that the water extracts from dry biomass of C. epithymum had a considerably stronger inhibitory effect on the studied M. sativa varieties (IR 32.7-100.0 %), as compared to the extracts of fresh biomass (IR 0.2-40.5%). Depending on the kind of C. epithymum extract (fresh or dry parasitic weed biomass), IRs for seed germination of the tested M. sativa varieties could be conventionally classified into five groups: 1) seed germination stimulation, -1.4% - extracts from fresh biomass affecting the variety ?Multifoliolate?; 2) seed germination inhibition of 0.1-10% - extracts prepared from fresh biomass affecting the varieties ?Prista 3?, ?Pleven 6?, ?Prista 5? and ?Obnova?; 3) seed germination inhibition of 11-20% - extracts from fresh biomass affecting the varieties ?Roly? and ?Victoria?; 4) seed germination inhibition of 30-45% - extracts from dry biomass affecting the variety ?Multifoliolate?; 5) seed germination inhibition of 46-60% - extracts from dry biomass affecting the varieties ?Prista 5?, ?Prista 3?, ?Victoria?, ?Roly?, ?Dara?, ?Pleven 6? and ?Obnova?. The varieties ?Victoria?, ?Prista 5? and ?Multifoliolate? of M. sativa possess some allelopathic tolerance because their germination indexes (GI) range from 80.5 to 88.7 % for the extracts prepared from fresh weed biomass of C. epithymum, and from 47.1 to 48.6% for the extracts from dry weed biomass, compared to control treatment. These varieties can be used as components in future breeding programmes.


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