Study of Salinity Tolerance in Four Maize (Zea Mays L.) Hybrids at Seedling Stage

Omrani, Behnam; Moharramnejad, Sajjad

doi:10.29252/jcb.9.24.79

Volume 9, Issue 24 (3-2018) J Crop Breed 2018, 9(24): 79-86 | Back to browse issues page

‎ 10.29252/jcb.9.24.79

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Omrani B, Moharramnejad S. (2018). Study of Salinity Tolerance in Four Maize (Zea Mays L.) Hybrids at Seedling Stage . J Crop Breed. 9(24), 79-86. doi:10.29252/jcb.9.24.79
URL: http://jcb.sanru.ac.ir/article-1-938-en.html

Study of Salinity Tolerance in Four Maize (Zea Mays L.) Hybrids at Seedling Stage

Behnam Omrani¹, Sajjad Moharramnejad ^*²

1- Department of Agriculture, Payame Noor University (PNU), Tehran
2- Tabriz Branch, Islamic Azad University, Tabriz

Abstract: (4894 Views)

Salinity stress is one of the most important abiotic stresses that effects on many agronomic, nutritional, physiological and biochemical processes of crops. A factorial experiment based on completely randomize design with four replications under laboratory conditions with four maize hybrids (SC640, SC704, SC740 and SC Simon) and three levels of salt stress (0, 100 and 200 mM NaCl) was carry out in seedling stage. Dry weight and plant height of maize seedlings significantly decreased under salinity stress, so SC 704 and SC-Simon showed significantly smaller reduction than SC640 and SC740 under salinity stress. Salt stress was declined chlorophyll a, chlorophyll b and total chlorophyll compared with control. Anthocyanin and carotenoid were different responses to salinity stress. Relative water content (RWC) was decreased under salinity stress, but between maize hybrids were not differed significantly from this water relation attribute. K⁺ increased in all maize hybrid seedlings, accumulation of K⁺ dependent to Na⁺ influx. In other words, the hybrids that accurate high Na⁺ was have more K⁺ content. Glycine betaine and proline contents were enhanced under salt stress. SC 704 and SC Simon were tolerant to salinity.

Keywords: Glycine betaine, Maize, Prline, Pigment contents, Salt stress

Full-Text [PDF 473 kb] (3504 Downloads)

Type of Study: Research | Subject: اصلاح نباتات، بیومتری
Received: 2018/03/10 | Accepted: 2018/03/10

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