Analysis of Interrelationships among Seedling Vigor, Field Emergence, and Yield in Wheat<sup>1</sup>

Gupta, Prerna; Austenson, H. M.

doi:10.2134/agronj1973.00021962006500030019x

Cited by 8 publications

(9 citation statements)

References 14 publications

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“…However, field performance and germination as determined by a standard germination test, were not related. These observations support others (DasGupta and Austenson, 1973b;Sonntag et al, 1988) who have concluded that standard germination is inadequate for describing the true potential of wheat seed, particularly where plants may be subjected to stress at early developmental stages. Taken alone, the use of certified seed with a high germination percentage does not ensure a high degree of wheat tolerance to trifluralin residues.…”

Section: Discussionsupporting

confidence: 86%

Differences among Certified Wheat Seedlots in Response to Trifluralin

et al. 1991

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Injury to wheat from trifluralin [2,6‐Dinitro‐N,N‐dipropyl‐4‐(trifluoromethy1)benzenamine] residue occurs under a range of environmental and field conditions and may influence crop stand density, seed quality, and grain yield. The objective of this study was to determine the relationship between seed quality, stand density, and grain yield of wheat (Triticum aestivum L.) at trifluralin dosages typical of residue levels occurring under western Canadian conditions. Three certified seedlots of ‘Katepwa’ spring wheat designated S1, S2, and S3 were planted into trifluralin‐treated soil under field conditions at Portage la Prairie, Manitoba in 1988 and 1989. All three seedlots had high germination percentages (> 95), however, S1 was darker colored and had a higher thousand‐kernel weight and a greater proportion of large kernels than either S2 or S3. Both cold germination and cold growth tests indicated that S1 and S2 were more vigorous than S3, however no differences in physiological vigor between S1 and S2 were observed. Significant seedlot ✕ trifluralin interactions (P ≤ 0.05) occurred for crop emergence and seed yield in both years, with S1 being less affected than either S2 or S3 as trifluralin dosages increased. For example, in 1988 where 0.25 kg ha−1 trifluralin was present at seeding, emergence of S1 was reduced by 22% compared to 27% for S2 and 31% for S3 relative to the untreated controls. In 1989, the comparative percentage reductions were 9, 12, and l8%, respectively. Similarly, at 0.25 kg ha−1, seed yields in plots sown to S1, S2, and S3 were 3, 7, and 13% less than in the untreated plots in 1988; and 5, 7, and 11% less in 1989. Results of this study substantiate that wheat response to soil trifluralin level at seeding can be modified by qualitative and quantitative differences in seed quality.

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Section: Discussionsupporting

confidence: 86%

Differences among Certified Wheat Seedlots in Response to Trifluralin

et al. 1991

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“…The dry matter production of the seedling is the ultimate manifestation of physiological vigor (Heydecker, 1973). Seedling vigor is usually characterized by weight of the seedlings after a period of growth (Qualls and Cooper, 1968 and Dasgupta and Austenson, 1973). In the present study ,maximum vigor index was observed at cold storage.…”

Section: Impact Factor (Jcc): 59857 Naas Rating: 413supporting

confidence: 52%

Effect of Storage Conditions on the Seed Quality of Freshly Harvested High Moisture Undried rice Seeds Cv. Co 51

V¹,

Tjprc²

2018

IJASR

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Storing the freshly harvested high moisture seeds will induce the deterioration faster; it affects the storability of the seed material. The present study was carried out to access the appropriate storage condition to mitigate the seed quality loss of the freshly harvested un-dried seeds. The freshly harvested high moisture rice seeds were transported from Cauveri delta basin and stored under cold and ambient storage condition for 15 days in Department of Seed Science andTechnology, Tamil Nadu Agricultural University, Coimbatore. In order to know the effectiveness of the storage condition, the seeds are drawn at alternative days and the seed quality were studied. The seeds under cold storage performed better than ambient storage condition, in the speed of germination, germination (%), seedling length, dry matter production and vigor index. The seeds stored under cold storage condition recorded higher germination (45) which was 12% higher than seeds stored under ambient storage and it was only (33). Seeds stored under cold storage condition recorded higher vigor index (968) on 15 days after storage and the ambient storage recorded minimum vigor index (670). The moisture content was under decreasing pattern, in cold and ambient storage, the moisture content was (23.8%) to (21%) and (23.0%) and (15.8 %) after 15 days of storage.transported to the drying yards for drying. Keeping the seeds with high moisture content will cause seed quality losses. The high seed moisture leads to the reduction of seed germination, changes in free fatty acid levels and EC, induction of temperature and decrease in protein contents etc. Resulting the total seed quality loss.With this background in consideration, the present study was taken up to investigate the effects of storage conditions on the seed quality of freshly harvested rice seed with high moisture content, before going to drying and storage. MATERIALS AND METHODSThe genetically pure and freshly harvested seeds of rice cv. CO 51 were collected from Cauveri delta basin, Tanjore, Needamangalam and were cleaned and transported to the Department of Seed Science and Technology, TNAU, Coimbatore. The seeds were graded using the recommended sieve size which constituted the research materials for the present investigation. Freshly harvested rice seeds of cv. CO 51 with a high moisture content of 23.80% were packed in moisture pervious container viz., cloth bag and kept for storage under the cold and ambient condition and subsequently drawn at alternative days up to 15 days and the following seed quality parameters were recorded. Speed of Germination:Four replicates of twenty -five seeds each were used to test the speed of germination of different varieties. The seeds showing radicle protrusion were counted daily from the third day after sowing until the seventh day. From the number of seeds germinated on each day, the speed of germination was calculated using the following formula and the results were expressed in number (Maguire, 1962)..Speed of germination = + + … … … . . + Moisture...

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“…These may measure seedling growth) (de Tempe 1963;Woodstock & Fesley 1965;Dasgupta & Austenson 1973;Perry 1977) or the response to moistures and temperature stresses (Matthews & Collins 1973;Stormonth & Doling 1979).…”

Section: Introductionmentioning

confidence: 99%

The relationship between field emergence, laboratory germination, and vigour testing of New Zealand seed wheat lines

Hampton¹

1981

New Zealand Journal of Experimental Agriculture

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The relationship between field emergence and both laboratory germination testing and several vigour tests was examined at one site for 12 and 20 seed wheat lines in 1978 and 1979. Results of the field emergence trials were more closely correlated with direct stress vigour tests than laboratory germination when soil conditions were unfavourable, but no great advantage was gained from vigour testing when soil conditions were good. Field emergence was closely correlated with 5 cm soil temperature. The use of a vigour test involving germination at 5°C for 7 days, then 20°C for 4 days, is proposed for vigour testing of New Zealand cereal seed lines, after further research has confirmed its suitability over a wider range of soil types and conditions.

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Analysis of Interrelationships among Seedling Vigor, Field Emergence, and Yield in Wheat¹

Cited by 8 publications

References 14 publications

Differences among Certified Wheat Seedlots in Response to Trifluralin

Differences among Certified Wheat Seedlots in Response to Trifluralin

Effect of Storage Conditions on the Seed Quality of Freshly Harvested High Moisture Undried rice Seeds Cv. Co 51

The relationship between field emergence, laboratory germination, and vigour testing of New Zealand seed wheat lines

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Analysis of Interrelationships among Seedling Vigor, Field Emergence, and Yield in Wheat1

Cited by 8 publications

References 14 publications

Differences among Certified Wheat Seedlots in Response to Trifluralin

Differences among Certified Wheat Seedlots in Response to Trifluralin

Effect of Storage Conditions on the Seed Quality of Freshly Harvested High Moisture Undried rice Seeds Cv. Co 51

The relationship between field emergence, laboratory germination, and vigour testing of New Zealand seed wheat lines

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Analysis of Interrelationships among Seedling Vigor, Field Emergence, and Yield in Wheat¹