Abstract
Seed size and weight are important criteria for determining seedling vigour and stand establishment. Evolution of seed dry weight of wheat (Triticum aestivum L.) during germination and early growth was examined because poor stands are often associated with the depletion and exhaustion of seed reserves. Two laboratory experiments were conducted on filter paper and in soil at three water potentials using wheat seeds. Seed, root, and shoot dry weights were recorded at approximately one-day intervals. Coleoptile and first leaf lengths were also measured at all sampling periods. Wheat seedlings grown on filter paper in the dark grew to a length of 90 to 100 mm with 50% of the initial seed weight remaining after eight days when the experiment was terminated. In soil, wheat seedlings grew 15 mm with 25% of the initial seed weight remaining. Seed reserves were depleted more quickly when the soil was wet because seedlings grew more quickly. There were significant and similar negative relationships between seed weight and coleoptile length of wheat seedlings grown on filter paper and in soil. There was no effect of soil water potential on the relationship between seed weight and shoot length. Therefore, it was concluded that poor wheat stands are not likely to occur due to depletion of seed reserves under field conditions without mechanical obstacles.
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References
Abd el rahman N and Bourdu R 1986 Effet de la taille et de la forme des grains sur quelques caracteristiques du development du mais au stade jeune. Agronomie 6, 181–186.
Austenson H M and Walton P D 1970 Relationships between initial seed weight and mature plant characters in spring wheat. Can. J. Plant Sci. 50, 53–58.
Bewley J D and Black M 1983 Physiology and Biochemistry of Seeds in Relation to Germination. Springer-Verlag, Berlin, Heidelberg, New York.
Bouaziz A and Bruckler L 1989a Modeling of wheat imbibition and germination as influenced by soil physical properties. Soil Sci. Soc. Am. J. 53. 219–227.
Bouaziz A and Bruckler L 1989b Modeling of wheat seedling growth and emergence. I. Seedling growth as affected by soil water potential. Soil Sci. Soc. Am. J. 53, 1832–1838.
Bouaziz A, Bruckler L 1989c Modeling of wheat seedling growth and emergence. II. Comparison with field experiments. Soil Sci. Soc. Am. J. 53, 1838–1846.
Bouaziz A Souty N and Hicks D 1990 Emergence force exerted by wheat seedlings. Soil Tillage Res. (Forthcoming).
Ching T M, Hedtke S, Boulger M C and Kronstad W E 1977 Correlation of field emergence rate and seed vigor criteria in barley cultivars. Crop Sci. 17, 312–314.
Feneck J and Papy F 1977 Conditions de réussite de la levée en climat méditerranéen: cas des céréales en sec au Nord du Maroc. Ann. Agron. 28, 599–635.
Hadjichristodoulou A, Della A and Photiades J 1977 Effects of sowing depth on plant establishment, tillering capacity and other agronomic characters of cereals. J. Agric. Sci. Camb. 89, 161–167.
Hampton J G 1981 The extent and significance of seed size variation in New Zealand wheats (Triticum aestivum L.). N.Z.J. Exp. Agric. 9, 179–184.
Kittock D L and Law A G 1968 Relationship of seedling vigor to respiration and tetrazolium chloride reduction by germinating wheat seeds. Agron. J. 60, 286.
Pinto M C 1981 Étude des Couts Énergétiques de la Croissance de Plantule de Blé (Triticum aestivum L.) Lors du Passage de l'Hétérotrophie a l'Autotrophie. Thèse de Doct. Ing. de l'I.N.A. PARIS-GRIGNON.
Puri Y P and Qualset C D 1978 Effect of seed size and seedling weight on yield and other characteristics of durum wheat. Phyton Rev. Int. Bot. Exp. 36 (1), 41–45.
Ries S K and Everson E H 1973 Protein content and seed size relationships with seedling vigor of wheat cultivars. Agron. J. 65, 884–886.
Soil Survey Staff 1975 Soil taxonomy: A basis system of soil classification for making and interpreting soil surveys. USDA-SCS Agric. Handb. 436. U.S. Gov. Print. Office, Washington, DC.
Wellington P S 1966 Germination and seedling emergence. In The Growth of Grasses and Cereals. Eds F LMilthorpe and J DIvins. pp 3–19. Butterworths, London.
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Bouaziz, A., Hicks, D.R. Consumption of wheat seed reserves during germination and early growth as affected by soil water potential. Plant Soil 128, 161–165 (1990). https://doi.org/10.1007/BF00011105
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DOI: https://doi.org/10.1007/BF00011105