Vigor tests on lettuce seeds and their correlation with emergence.

Contreras, Samuel; Barros, Maiara Pereira

doi:10.7764/rcia.v32i1.301

Cited by 11 publications

(6 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is a parameter of the sowing value of seeds, serving to determine the potential of germination [5]. There are many factors which may lead to adverse structural and metabolic changes in seeds, resulting in either the low-level or absence of activation of the seed embryo, causing poor growth of seedlings or even complete inhibition of growth.…”

Section: Introductionmentioning

confidence: 99%

QTL mapping for germination of seeds obtained from previous wheat generation under drought

et al. 2014

View full text Add to dashboard Cite

The QTLs controlling germination and early seedling growth were mapped using seeds acquired from mapping population and parental lines of Chinese Spring and SQ1 grown under water-limited conditions, severe drought (SDr) and well-watered plants (C). Germination ability was determined by performing a standard germination test based on the quantification of the germination percentage (GP24) of seeds incubated for 24 h at 25°C in the dark. Early seedling growth was evaluated on the basis of the length of the root and leaf at the 6th day of the experiment. QTLs were identified by composite interval mapping method using Windows QTLCartographer 2.5 software. For the traits studied, a total of thirty eight additive QTLs were identified. Seventeen QTLs were mapped in C on chromosomes: 1A, 2A, 7A, 1B, 2B, 3B, 4B, 5B, 6B, 7B, 2D, 3D, 4D and 6D, while twenty one QTLs were identified in SDr on chromosomes: 1A, 2A, 5A, 2B, 3B, 4B, 5B, 6B, 7B, 3D, 5D and 6D. Most of the QTLs for GP and early leaf growth parameters were clustered on chromosome 4B (associated with the Rht-B1 marker) both in C and SDr plants. The results indicate the complex and polygenic nature of germination.

show abstract

Section: Introductionmentioning

confidence: 99%

QTL mapping for germination of seeds obtained from previous wheat generation under drought

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Germination vigor is driven by the ability of the plant embryo, embedded within the seed, to resume its metabolic activity in a coordinated and sequential manner. Was analyzed the vigor tests on lettuce (Lactuca sativa L.) seeds and their correlation with emergence [60], demonstrated that saturated salt accelerated aging and digital image analysis were the best laboratory tests for lettuce seed vigor evaluation, especially for seed lots to be used for plug seedling production. In some case, the use of seed vigor tests is used to predict field emergence in plants, like lucerne (Medicago sativa) [61].…”

Section: Resultsmentioning

confidence: 99%

Analysis of the Effect of Scarification Process on Papaya (Carica papayaLin.) Seeds Germination

Rodrı́guez¹,

Vargas²,

Hijuelo³

et al. 2020

Seed Dormancy and Germination

View full text Add to dashboard Cite

The presence of the aril (sarcotesta) in the papaya causes a slow and low germination, being necessary to break the state of dormancy. Calcium hydroxide that was applied in order to evaluate its scarifying effect was the objective. The sample consisted of 60 randomly selected fruits of hermaphrodite plants in a commercial production batch of approximately 1 ha (2222 plants) showing commercial maturity, of homogeneous size (±2 kg). The treatments were calcium hydroxide Ca(OH) 2 at three doses, dipping the seed for a period of 24 h; the standardized sodium hydroxide (NaOH) at 25% with a 15 min immersion time. The highest germination and vigor seeds were obtained applied Ca(OH) 2 with highly significant differences respect to the rest treatment, especially for the dose of 60 g l −1 of water for reasons of diminishing expenses. Significant correlations were found, with direct relations (aril and mechanical damage) and inverse relations (abnormal seeds) between the variables evaluated related to the vigor and germination of the seeds. It can be an ecological and not expensive methodology to improve the germination and vigor of papaya seeds in relation to other chemical compounds to scarify.

show abstract

“…Inconsistent correlation results of germination and emergence of the two cowpea cultivars may be due to differences in seed vigour. Contreras & Barros (2005) observed that seed lot quality in lettuce affected the correlation of germination with emergence of seeds. PAN 311 was of good quality owing to the fact that seeds were from the same year, whereas IT93K5132 seeds were held over from the previous year.…”

Section: Discussionmentioning

confidence: 99%

Germination and seedling emergence responses of common bean and cowpea to plant extract seed treatments

2016

View full text Add to dashboard Cite

SUMMARYThe present study was initiated to investigate the effect of crude plant extracts as seed treatments on Phaseolus vulgaris (common bean) and Vigna unguiculata (cowpea) seed germination and emergence in the presence of Colletotrichum lindemuthianum and Colletotrichum dematium, respectively. Common bean and cowpea seeds were treated with crude water and acetone extracts of Agapanthus caulescens Spreng., Allium sativum L., Carica papaya L. and Syzygium cordatum Hochst.ex Krauss at 5 and 15 mg/ml concentrations. Seeds treated with the synthetic fungicide fludioxonil+mefenoxam (the commercial product Celest® XL) represented the positive control, whereas dimethyl sulphoxide and water-soaked seeds represented negative controls. The rolled paper towel method of the International Seed Testing Association was used to investigate the effect of the treatments on seed germination. Mean emergence time (MET) was determined using seed inoculated with the respective pathogens. The changes in the ultrastructure of embryonic roots and the connecting tissues of embryo-cotyledon of common bean and cowpea treated with Syzygium acetone extracts and Agapanthus water extracts were investigated using transmission electron microscopy (TEM). High germination percentages of >90% were observed in bean seeds from two production seasons treated with low concentrations of water extracts of Allium, Syzygium and Agapanthus and acetone extracts of Allium, Agapanthus and Carica. These treatments also recorded high emergence percentages with low MET values, which were similar to the water control. Cowpea seeds treated with Carica water extract had the highest germination and emergence. Syzygium acetone was the only extract that gave higher germination and emergence in both IT93K5132 and PAN 311 varieties. Therefore, Carica water and Syzygium acetone extracts can be considered as potential bean and cowpea seed treatments. Generally, there were inconsistencies in terms of correlations of germination with emergence percentages in both cowpea and bean seed treated with plant extracts used in the study, which could be due to differences in vigour. The TEM study of embryo-cotyledon tissue of both species revealed that Syzygium and Agapanthus extract seed treatment may accelerate metabolic processes as evidenced by the presence of vacuoles, many cristae and few lipid bodies.

show abstract

Vigor tests on lettuce seeds and their correlation with emergence.

Cited by 11 publications

References 2 publications

QTL mapping for germination of seeds obtained from previous wheat generation under drought

QTL mapping for germination of seeds obtained from previous wheat generation under drought

Analysis of the Effect of Scarification Process on Papaya (Carica papayaLin.) Seeds Germination

Germination and seedling emergence responses of common bean and cowpea to plant extract seed treatments

Contact Info

Product

Resources

About