Seed Vigor and Vigor Testing

Copeland, Lawrence O.; McDonald, Miller B.

doi:10.1007/978-1-4615-1619-4_8

Cited by 14 publications

(11 citation statements)

References 59 publications

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“…Seed vigor refers to the sum total of those properties of the seed that determine its activity and performance during germination and seedling emergence ( Copeland and McDonald, 2001 ). Mature seeds from WT and Ri rice were treated with the redox indicator TTC (2,3,5–triphenyltetrazolium chloride) to assess their viability ( Porter et al , 1947 ; Towill and Mazur, 1975 ).…”

Section: Resultsmentioning

confidence: 99%

A rice lectin receptor‐like kinase that is involved in innate immune responses also contributes to seed germination

et al. 2013

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Seed germination and innate immunity both have significant effects on plant life spans because they control the plant's entry into the ecosystem and provide defenses against various external stresses, respectively. Much ecological evidence has shown that seeds with high vigor are generally more tolerant of various environmental stimuli in the field than those with low vigor. However, there is little genetic evidence linking germination and immunity in plants. Here, we show that the rice lectin receptor-like kinase OslecRK contributes to both seed germination and plant innate immunity. We demonstrate that knocking down the OslecRK gene depresses the expression of α–amylase genes, reducing seed viability and thereby decreasing the rate of seed germination. Moreover, it also inhibits the expression of defense genes, and so reduces the resistance of rice plants to fungal and bacterial pathogens as well as herbivorous insects. Yeast two-hybrid and co-immunoprecipitation experiments revealed that OslecRK interacts with an actin-depolymerizing factor (ADF) in vivo via its kinase domain. Moreover, the rice adf mutant exhibited a reduced seed germination rate due to the suppression of α–amylase gene expression. This mutant also exhibited depressed immune responses and reduced resistance to biotic stresses. Our results thus provide direct genetic evidence for a common physiological pathway connecting germination and immunity in plants. They also partially explain the common observation that high-vigor seeds often perform well in the field. The dual effects of OslecRK may be indicative of progressive adaptive evolution in rice.

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Section: Resultsmentioning

confidence: 99%

A rice lectin receptor‐like kinase that is involved in innate immune responses also contributes to seed germination

et al. 2013

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“…Since the germination test is usually conducted under optimal conditions, it is not always possible to estimate the performance of a seed lot in the field, based only on the standard germination test. According to Copeland and McDonald (2001), since the standard germination test is conducted under ideal conditions, it does not necessarily reflect the germination potential of a seed lot under field conditions.…”

Section: Resultsmentioning

confidence: 99%

Individual electrical conductivity test for the assessment of soybean seed germination

et al. 2015

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Soybean seed quality is affected by many factors, which may occur during the production, processing, and storage phases. To ensure the quality of seeds, the adoption of fast and efficient methods to estimate seed viability in quality control programs is important. This study aimed to determine a partition point of the individual electrical conductivity test to predict soybean seed germination. Three lots each of five different soybean cultivars (Fundacep 57 RR, BMX Potência RR, BMX Força RR, BMX Turbo RR, and Nidera 7321 RG) were used. Seed quality was assessed through the mass of 1,000 seeds (MTS), moisture content (MC), germination test (G), bulk electrical conductivity (BEC), individual electrical conductivity (IEC), accelerated ageing (AA), and field seedling emergence (FSE). To determine a partition point in the IEC test for predicting germination, seeds were subjected to the germination test in the same position used for the IEC test. The accuracy of the partition point was tested by comparing predicted germination with the standard germination test. The partition point obtained for normal seeds was 130 µS .cm -1 .seed -1 . The IEC test, however, had limitations in predicting soybean seed germination. The data for predicted germination were different from those obtained by the standard test, because the characteristics of each lot led to differences in the electrical conductivity values. Key words: Glycine max (L.) Merrill, partition point, fast test, seed quality ResumoA qualidade das sementes de soja pode ser afetada por inúmeros fatores que podem ocorrer em qualquer etapa da produção. Para garantir a qualidade das sementes é necessária a adoção testes rápidos e eficientes em estimar a viabilidade das sementes. O objetivo desse estudo foi determinar o ponto de partição do teste de condutividade elétrica individual (CEI) para estimar a germinação de sementes de soja. Foram utilizados 15 lotes pertencentes a diferentes cultivares (Fundacep 57 RR, BMX Potência RR, BMX Força RR, BMX Turbo RR, e Nidera 7321 RG). A caracterização dos lotes foi efetuada pelo peso de mil sementes, teor de água, germinação, condutividade elétrica massal e individual, envelhecimento acelerado e emergência a campo. Para determinação do ponto de partição as sementes foram submetidas ao teste padrão de germinação, respeitando-se a posição utilizada na leitura da CEI. A veracidade do

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“…Thus, it is recommended that the use of good and healthy seeds can determine the quality of crop yields. Tuber size is one of the factors that can affect the presence of vigor, yield and quality (Copeland and McDonald, 2001;Goldy, 2000;MACB, 2008). In essence the farmers use makeshift planting material regardless of the size of the bulbs/tuber which will guarantee the growth, yield and quality.…”

Section: Introductionmentioning

confidence: 99%

The Test of Genotype Adaptation of Several Garlic Varieties on the Highland

Gomes¹,

Widaryanto²,

Ariffin³

et al. 2019

OnLine Journal of Biological Sciences

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This study aims to determine the growth patterns of four types of local garlic (Allium sativum L.) and to obtain the adaptive appearance of the agronomical characteristics with maximum tuber weight in two different altitude places. The research was conducted in the Borah garlic farmer garden, Wiyurejo village, Pujon subdistrict, Batu city with an altitude of 1200 m above sea level, daily temperature of 15-20C and average rainfall of 21.400 millimeter/year and in the UB pilot garden of Cangar, Tulungrejo Urban village, Bumiaji Sub district, tourism city of Batu with an altitude of 1600 m above sea level, daily temperature of 17.5-22.8C and average rainfall of 2733 millimeter/year/year. The experimental design used was a Nested completely randomized design. The parameters observed were measuring plant variables consisting of plant height, number of leaves, leaf area, tuber diameter, tuber wet weight, tuber dry weight and tuber dry weight (tons per hectare). The results showed that the best growth pattern occurred at an altitude of 1600 m above sea level with 10 weeks after planting/meters sea level (weeks after planting). On the other hand, the highest weight is found in the type of Atsabe (3.932ton ha 1) but not significantly different from Saigon (3.735ton ha 1) at altitude of 1600 m above sea level as well as genotype of Saigon (3.628ton ha 1) and Atsabe (3.355ton ha 1) at altitude of 1200 m above sea level. Besides that, the highest percentage of allicine is found in the varieties of Atsabe (19.18%) and the lowest is found in the varieties of Sembalun (4.87%) at an altitude of 1200 m above sea level. For the growth and productions of local garlic plants from the four varieties, it is recommended to use Saigon and Atsabe genotypes at altitudes of 1600 m above sea level and 1200 m above sea level.

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Seed Vigor and Vigor Testing

Cited by 14 publications

References 59 publications

A rice lectin receptor‐like kinase that is involved in innate immune responses also contributes to seed germination

A rice lectin receptor‐like kinase that is involved in innate immune responses also contributes to seed germination

Individual electrical conductivity test for the assessment of soybean seed germination

The Test of Genotype Adaptation of Several Garlic Varieties on the Highland

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