Germination (Emergence) of Vegetable Seed as Affected by Different Soil Moisture Conditions

Doñeen, L. D.; MacGillivray, John H.

doi:10.1104/pp.18.3.524

Cited by 69 publications

(22 citation statements)

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“…A seed must absorb a certain amount of water to germinate, the critical hydration level being species-specific [14,15,18]. Seed imbibition rates and the level of germination both decrease as soil water potential decreases [4,5,8,18,41].…”

Section: Resultsmentioning

confidence: 99%

Effect of water content on the germination characteristics of Trichosanthes cucumerina, Momocardia charantia and Abelmoschus esculentus seeds

Razeek¹,

Sittampalam²,

Ranganathan³

2016

J App Biol Biotech

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The study was aimed to determine the effect of water content on seed germination and early seedling growth of Momocardia charantia, Trichosanthes cucumerina and Abelmoschus esculentus seeds. Each set of triplicate test tubes containing ten seeds of each Momocardia charantia, Trichosanthes cucumerina and Abelmoschus esculentus, were filled with sterile water at different water content and allowed to germinate in room temperature for seven days. Parameters measured were the percentage of germination, germination index, mean time to germination and the length of germ tube. The highest germination characteristics were observed at low and moderate water contents in all three types of plant seeds examined. The optimum germination responses were expressed by the seeds of Momocardia charantia and Trichosanthes cucumerina at 23.5 Kgm . Moisture availability imposed severe limitations on the seed germination of the selected plant species. The seeds of Trichosanthes cucumerina, Momocardia charantia and Abelmoschus esculentus showed different range of water content tolerance for optimum germination.

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Section: Resultsmentioning

confidence: 99%

Effect of water content on the germination characteristics of Trichosanthes cucumerina, Momocardia charantia and Abelmoschus esculentus seeds

Razeek¹,

Sittampalam²,

Ranganathan³

2016

J App Biol Biotech

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“…These salts originate in the soil or other germination medium used, they can be added in the irrigation water or through fertilization. A lack of water in the soil during the germination process can reduce the germination percentage due to water stress (Doneen and MacGillivray 1943;Hanks and Thorp 1956). Seeds will germinate over a wide range of soil moisture conditions from field capacity to permanent wilting.…”

Section: Watermentioning

confidence: 99%

Plant Growth Substances

Arteca¹

1996

169

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“…Indeed Wurr & Fellows (1985) showed that, when lettuce seedlings emerged from soil with a moisture content varying from 5 to 15%, (approximately equivalent to soil water potentials ranging from -15 bars to -0-1 bar), effects of sowing depth on seedling emergence appeared to be related to differences in soil moisture content and hence soil water potential. Kaufmann (1969) showed that germination of lettuce in soil was almost completely inhibited at -4.1 bars and Doneen & Macgillivray (1943) found, on a fine sandy-loam, that the emergence of lettuce seedlings was at a maximum (91%) at 12% moisture content and was reduced to 81% at 11% soil moisture content. These results suggest that percentage germination and emergence of lettuce are likely to be depressed in the field by small changes in soil water potential.…”

Section: Introductionmentioning

confidence: 99%

The laboratory germination of crisp lettuce seeds under moisture stress

Wurr

Fellows

1987

Annals of Applied Biology

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Seeds of the crisp lettuce cultivar Pennlake were germinated using all combinations of six 'initial' solutions of polyethylene glycol 6000 (PEG) with osmotic potentials ranging from 0 to -8 bars and seven 'secondary' solutions of PEG with osmotic potentials ranging from 0 to -10 bars, to which seeds were moved after 24 or 48 h in the 'initial' solution. The number of seeds germinating decreased at more negative osmotic potentials of both 'initial' and 'secondary' solutions but there was an interaction between germination temperature and the osmotic potential of the 'initial' solution. At an 'initial' solution osmotic potential of 0 bars germination at 20 "C exceeded that at 10 "C. As the osmotic potential of the 'initial' solution decreased germination at 20 "C decreased more than at 10 "C so that at the more negative osmotic potentials germination at 10 "C exceeded that at 20 "C. However seeds ungerminated after 14 days germinated normally when transferred back to water, so that the average final germination was 99.5%.The results suggest that major fluctuations in soil water potential in a seedbed are unlikely to influence seed germination per se provided that a period of 24 to 48 h at 0 bars tension is available at some time. The timing of such a period relative to sowing will have a considerable effect on the time of germination and hence the time of emergence. It is concluded that factors other than the direct effect of soil moisture content on germination are involved in reducing seedling emergence under fluctuating soil moisture conditions in the field. 49-57. HEYDECKER, W. & GIBBINS, B. M. (1978). Attempts to synchronise seed germination. Acta Horticulfurae 72, 79-92. Transactions of the American Society of Agricultural Engineers 18, 105 1-1056. different soil moisture conditions. Plant Physiology 18, 524-529. 78, 349-359. Lettuce germination 453 KAUFMANN, M. R. (1969). Effects of water potential on germination of lettuce, sunflower and citrus seeds.

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Germination (Emergence) of Vegetable Seed as Affected by Different Soil Moisture Conditions

Cited by 69 publications

References 0 publications

Effect of water content on the germination characteristics of Trichosanthes cucumerina, Momocardia charantia and Abelmoschus esculentus seeds

Effect of water content on the germination characteristics of Trichosanthes cucumerina, Momocardia charantia and Abelmoschus esculentus seeds

Plant Growth Substances

The laboratory germination of crisp lettuce seeds under moisture stress

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