Vigor Tests Used to Rank Seed Lot Quality and Predict Field Emergence in Wheat

Khan, Amir Zaman; Khan, Hamayoon; Khan, Rashid; Aziz, Ahsan

doi:10.3923/ajpp.2007.311.317

Cited by 15 publications

(16 citation statements)

References 7 publications

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“…Emerged seedlings in each container were counted daily at an interval of 24 hours from the first day to the day no more germination occured. The mean germination time was calculated using the method described by Khan et al (2010) as follows:…”

Section: Germination Percentagementioning

confidence: 99%

Evaluation of Seed Quality Attributes of Sorghum Germplasm Accessions from Eastern, Coastal and Nyanza Regions, Kenya

Muui¹,

Muasya²,

Nguluu³

et al. 2020

SAR

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Sorghum (Sorghum bicolor L.) is an important cereal crop in Kenya. Despite the crops importance, the yields attained by farmers in Eastern, Coastal and Nyanza regions of Kenya remain low. Access to good quality seeds of sorghum is one of the constraints facing the subsistence farmers. Good quality seed is important for increasing yield to attain food security. The aim of this study was to evaluate quality attributes of the seed used by farmers. A total of 108 germplasm accessions were obtained from 76 farmers. The seeds were tested for time and percentage of germination, seed vigour index, shoot and root dry weight. Data collected was subjected to analysis of variance. Means were separated using Fisher’s Least Significance Difference test at p ≤ 0.05. Seed samples of 26 accessions attained germination percentage below stipulated standards by Seeds and Plant Varieties Act CAP 326. Majority of seeds showed longer mean germination time with only nine accessions germinating in less than ten days. Seed vigour index was relatively high in most of the accessions, while biomass accumulation varied from high to very low among accessions. Though most of the seeds attained a high germination percentage, about 92% of seeds showed longer mean germination time. The environmental conditions in the fields, pre and post harvest handling practices impact on the seed quality hence the wide variability in germination percentage, germination time, seed vigour index and dry matter accumulation. Therefore the need to improve quality of seeds used by subsistence farmers by providing extension services on best pre and post harvest handling practices. Increasing production of sorghum in these regions will contribute significantly towards realizing food security. Further analysis could be carried out on genetic and sanitary quality aspects of the seeds planted by farmers in Eastern, Nyanza and Coastal regions.

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Section: Germination Percentagementioning

confidence: 99%

Evaluation of Seed Quality Attributes of Sorghum Germplasm Accessions from Eastern, Coastal and Nyanza Regions, Kenya

Muui¹,

Muasya²,

Nguluu³

et al. 2020

SAR

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“…The results of this study demonstrated that vigor tests such as the accelerated aging, EI, and dry weight accumulation have a high correlation with seedling emergence. Similarly, Khan et al (2010) concluded that in wheat, the accelerated aging test and germination index predict seed performance in field emergence.…”

Section: Resultsmentioning

confidence: 99%

Accelerated aging predicts the emergence of rice seedlings in the field

Garcia¹,

Coelho²

2021

Semina: Ciênc. Agrár.

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Selecting the most appropriate vigor test for rice to predict seedling emergence remains a challenge. This is mainly attributed to the diversity of available tests that evaluate vigor; however, there is a critical need for tests that can show a high correlation with field emergence. Thus, this study aimed to determine which vigor tests are the most efficient in predicting the emergence of rice seedlings, to facilitate correct selection for quality control analyses and pre-sowing for rice seed commercialization. Across two growing seasons, 2016/17 and 2017/18, different seed lots of ‘SCS122 Miura’ rice were subjected to vigor evaluations including germination test, electrical conductivity, cold test, low temperature germination, accelerated aging, root and shoot length, seedling dry weight, emergence speed, and emergence speed index, and greenhouse and field emergence tests. A completely randomized design with four replicates was used for the experiments. All statistical analyses were performed using R software. The germination rate for ‘SCS122 Miura’ seed lots in both growing seasons was greater than 80%. In both growing seasons, unlike the similar results obtained for field emergence, in the laboratory tests, differences were observed between these same seed lots. Electrical conductivity and emergence speed showed a negative correlation with greenhouse and field emergence. The vigor tests for accelerated aging, emergence speed, and dry weight are more efficient in predicting the emergence of rice seedlings. Among the tested methods, accelerated aging (41 °C for 120 h) is one of the most efficient for predicting the emergence of rice seedlings and the best option for laboratory analysis of quality control and pre-sowing owing to its practicality and time required for execution.

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“…FE was demonstrated to be a good test to determine the deteriorated or low seed vigour seed because the FE test is thinner (detectable) and easily determines the seed vigour of A. cearensis seeds. Many authors support the possibility of a relationship between emergence and seed vigour (Demir et al, 2008;Milošević et al, 2010;Perveen et al, 2010). For example, FE can also be used to separate accessions for use in reforestation and conservation.…”

Section: Resultsmentioning

confidence: 99%

Seed quality of Amburana cearensis (Allemão) A.C. Sm. (Fabaceae) is influenced by storage condition

et al. 2017

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ABSTRACT-The aim of this study was to evaluate the effects of storage conditions on the germination of A. cearensis seeds. The experimental design was completely randomized into split plots over time with four replicates. The storage conditions of the airtight containers in the refrigerator and laboratory, paper bags in the laboratory and liquid nitrogen were assessed for 27 months. In the laboratory, we evaluated the germination, the germination rate, uniformity of germination, and total soluble and reducing sugars in the radicle. In the greenhouse, we evaluated seedling emergence, emergence rate and height of 30-day-old seedlings. Seeds stored in the refrigerator maintained a high initial germination rate, which decreased from the 21 st month. Seeds stored in paper bags in the laboratory showed low emergence and small seedlings. Total soluble sugars and reducing sugars were mobilized when the seeds were stored at low temperatures. Thus, it is not advisable to store A. cearensis seeds in a laboratory environment without airtight containers. A. cearensis seeds kept in a refrigerated environment maintained their viability for at least two years.Index terms: caatinga, conservation, emergence, Leguminosae, umburana-de-cheiro.A qualidade de sementes de Amburana cearensis (Allemão) A.C. Sm.(Fabaceae) é influenciada pelas condições de armazenamento RESUMO-O objetivo deste trabalho foi avaliar os efeitos das condições de armazenamento sobre a germinação de sementes de A. cearensis. O delineamento experimental foi inteiramente casualizado em parcelas subdivididas ao longo do tempo com quatro repetições. As condições de armazenamento como recipiente hermético no refrigerador; recipiente hermético em laboratório, sacos de papel em laboratório e nitrogênio líquido foram avaliadas durante 27 meses. No laboratório foram avaliadas germinação, taxa de germinação, uniformidade de germinação, açúcares solúveis totais e redutores da radícula. Em casa de vegetação avaliou-se emergência das plântulas, taxa de emergência e altura de mudas no decorrer dos 30 dias. As sementes armazenadas no refrigerador mantiveram alta germinação inicial e diminuíram a partir do 21º mês. O armazenamento de sementes em sacos de papel em laboratório apresentou baixa emergência e menores mudas. Os açúcares solúveis totais e os açúcares redutores são mobilizados quando as sementes são armazenadas a baixas temperaturas. Não é aconselhável armazenar sementes de A. cearensis em ambiente de laboratório sem um recipiente hermético. As sementes de A. cearensis mantidas em ambiente refrigerado mantêm a viabilidade durante pelo menos dois anos.

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Vigor Tests Used to Rank Seed Lot Quality and Predict Field Emergence in Wheat

Cited by 15 publications

References 7 publications

Evaluation of Seed Quality Attributes of Sorghum Germplasm Accessions from Eastern, Coastal and Nyanza Regions, Kenya

Evaluation of Seed Quality Attributes of Sorghum Germplasm Accessions from Eastern, Coastal and Nyanza Regions, Kenya

Accelerated aging predicts the emergence of rice seedlings in the field

Seed quality of Amburana cearensis (Allemão) A.C. Sm. (Fabaceae) is influenced by storage condition

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