Evaluation of vigor and tolerance of sweet corn seeds under hypoxia

Marinho, Jéssica de Lucena; Costa, Denis Santiago da; Carvalho, Deived Uilian de; Cruz, Maria Aparecida da; Zucareli, Claudemir

doi:10.1590/2317-1545v41n2209568

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…Though drought is the main water stress, sweet corn seeds are sensitive to flooding. However, it is not clear if there is genetic diversity for tolerance to flooding, as multivariate evaluation of the physiological potential of seeds was not efficient for assessing early vigor to verify if the submersion test has potential for classifying seed lots [68].…”

Section: Droughtmentioning

confidence: 99%

Sweet Corn Research around the World 2015–2020

2021

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Modern sweet corn is distinguished from other vegetable corns by the presence of one or more recessive alleles within the maize endosperm starch synthesis pathway. This results in reduced starch content and increased sugar concentration when consumed fresh. Fresh sweet corn originated in the USA and has since been introduced in countries around the World with increasing popularity as a favored vegetable choice. Several reviews have been published recently on endosperm genetics, breeding, and physiology that focus on the basic biology and uses in the US. However, new questions concerning sustainability, environmental care, and climate change, along with the introduction of sweet corn in other countries have produced a variety of new uses and research activities. This review is a summary of the sweet corn research published during the five years preceding 2021.

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Section: Droughtmentioning

confidence: 99%

Sweet Corn Research around the World 2015–2020

2021

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“…YH-5507 and YH-5427 showed maximum kernel yield under heat stress conditions while performance of multinational maize hybrid P-1543 was significantly better under optimal sowing than stress conditions (Figure 7). Biplot analysis has been widely used by many researchers to evaluate different genotypes for different selection criteria (Ali et al, 2015;Hefny et al, 2017;Marinho et al, 2019). In this study, it was used to compute correlation among different kernel yield related parameters and also to classify maize hybrids on the basis of their heat tolerance ability and productivity under stress conditions.…”

Section: Principle Component Analysis Based Biplotsmentioning

confidence: 99%

VARIATIONS AMONG MAIZE (Zea Mays L.) HYBRIDS IN RESPONSE TO HEAT STRESS: HYBRIDS SELECTION CRITERIA

Yousaf¹,

Bhatti²,

Ghani³

et al. 2021

Turkish Journal of Field Crops

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High ambient temperature is one of the most alarming climatic factors in challenging the productivity and sustainability of crops worldwide. An effective way to cope this problem is the development of climate smart, heat resilient maize hybrids through evaluating the cultivated germplasm. The main objective of current study was to evaluate local and multinational maize hybrids for their performance under optimal and heat stress conditions and to devise a selection criterion for the identification of heat tolerant maize hybrids. Nine maize hybrids, including local and multinational, were evaluated under optimal and heat stress conditions across three consecutive spring seasons (2017-18, 2018-19 and 2019-20) at Maize and Millets Research Institute, Yusafwala, Sahiwal. Results revealed the presence of highly significant differences among maize hybrids under both conditions and for all three seasons. Kernel yield was found to be highly correlated with net photosynthetic rate (0.735 ** ), shelling percentage (0.910 ** ) and relative cell injury percentage (-0.775 ** ) under stress conditions. Cluster and biplot analysis unveiled that two local maize hybrids YH-5507 and YH-5427 were highly heat tolerant while multinational hybrids i.e. NK-8711, P-1543 and DK-6724 were highly productive under control/optimal conditions only. These hybrids can be invaluable sources of genes/alleles for the development of climate smart maize genotypes.

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“…At the end of the assay (twelve days after sowing), seedling height (hypocotyl + primary root) and root length were determined using a millimeter ruler according to the norms established in the Rules for Seed Testing (Ministério da Agricultura Pecuária e Abastecimento, 2009) and adopted by other authors (Marinho et al, 2019;.…”

Section: Methodsmentioning

confidence: 99%

Response of two pepper species (Capsicum chinense Jacq. and Capsicum frutescens L.) to salt stress at germination stage in Northeast Brazil

Silva

Gondim

Ledo

et al. 2021

rcia

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Salinity is one of the striking problems in agricultural production in many parts of the world. Seed germination and seedling growth are two critical stages for the establishment of crops generally most sensitive to salt stress. The present study aimed at evaluating the germination and initial growth of pepper seedlings produced from seeds under different soaking times in NaCl solutions. The experiment was carried out in a completely randomized design, in a 2 × 4 × 5 factorial scheme using two pepper species (Capsicum chinense Jacq. and Capsicum frutescens L.), four levels of electrical conductivity (EC) of solutions (1.5, 3.0, 4.5, and 6.0 dS m-1) and five times of seed soaking in the solutions (2, 4, 6, 8 and 10 h), with three replications. The traits evaluated were the number of germinated seedlings, percentage of germination, seedling height, and root length. The results showed that C. frutescens pepper was more tolerant to different times of soaking in saline solutions prepared with NaCl compared to C. chinense. Thus, the results suggest that depending on the pepper species, it is recommended to use seeds primed in saline solutions with salinity levels compatible with those under field conditions (in saline soils and/or irrigation with saline waters).

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Evaluation of vigor and tolerance of sweet corn seeds under hypoxia

Cited by 7 publications

References 14 publications

Sweet Corn Research around the World 2015–2020

Sweet Corn Research around the World 2015–2020

VARIATIONS AMONG MAIZE (Zea Mays L.) HYBRIDS IN RESPONSE TO HEAT STRESS: HYBRIDS SELECTION CRITERIA

Response of two pepper species (Capsicum chinense Jacq. and Capsicum frutescens L.) to salt stress at germination stage in Northeast Brazil

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