Assessing cold tolerance heterosis at corn seedling stage using some physiological traits

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Erfanimoghadam Zahra; FOTOVAT REZA; MOHSENIFARD EHSAN; Rodriguez Victor

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Journal: Cereal Research Year:2019 | Volume:8 | Issue:4 Page(s): 471-482

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Title

Assessing cold tolerance heterosis at corn seedling stage using some physiological traits

Author(s)

Erfanimoghadam Zahra | FOTOVAT REZA | MOHSENIFARD EHSAN | Rodriguez Victor | Issue Writer Certificate

Keywords

Chlorophyll contentQ1

Electrolyte leakageQ2

Quantum efficiency of photosystem II (Fv/Fm)Q2

RootQ1

Abstract

Corn susceptibility to cold stress during early autotrophic growth is an important limitation for its cultivation in the cold areas. To identify the physiological basis of cold tolerance heterosis in maize seedlings, the changes of some physiological traits were studied in maize cold tolerant and susceptible inbred lines and hybrids at seedling stage in University of Zanjan, Iran, in 2017. The results showed that the effect of cold treatment on chlorophyll fluorescence, relative water content, Electrolyte leakage, chlorophyll a content, chlorophyll b content, carotenoids, Root volume, Root area and Root dry weight were significant. The better-parent heterosis was detected in chlorophyll b content, Root area, Root volume and Electrolyte leakage in most hybrids. Performance of MO17×EP80 hybrid was better than other hybrids for all physiological traits under stress conditions. EP42×MO17 and A661×MO17 hybrids also had better Root growth and extension under cold stress conditions. The significant correlation was only observed between heterosis values of some traits that had a common genetic, physiological and developmental basis, such as Root dry weight and relative water content or chlorophyll b content and Electrolyte leakage. However, the correlation between heterosis values of the other traits was generally poor, indicating that the genetic basis of heterosis is trait dependent and probably not controlled by a single mechanism. The significant differences among genotypes in all traits, provide a new opportunit to improve cold stress tolerance in a tropical plant using plant breeding.

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APA: Copy

Erfanimoghadam, Zahra, FOTOVAT, REZA, MOHSENIFARD, EHSAN, & Rodriguez, Victor. (2019). Assessing cold tolerance heterosis at corn seedling stage using some physiological traits. CEREAL RESEARCH, 8(4 ), 471-482. SID. https://sid.ir/paper/380180/en

Vancouver: Copy

Erfanimoghadam Zahra, FOTOVAT REZA, MOHSENIFARD EHSAN, Rodriguez Victor. Assessing cold tolerance heterosis at corn seedling stage using some physiological traits. CEREAL RESEARCH[Internet]. 2019;8(4 ):471-482. Available from: https://sid.ir/paper/380180/en

IEEE: Copy

Zahra Erfanimoghadam, REZA FOTOVAT, EHSAN MOHSENIFARD, and Victor Rodriguez, “Assessing cold tolerance heterosis at corn seedling stage using some physiological traits,” CEREAL RESEARCH, vol. 8, no. 4 , pp. 471–482, 2019, [Online]. Available: https://sid.ir/paper/380180/en

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