Maize yield, biomass and grain quality traits responses to delayed sowing date and genotypes in rain-fed condition

  • Qingjun Cao, Gang Li, Fentuan Yang, Xiaoli Jiang Jilin Academy of Agriculture Science/Key Laboratory of Northeast crop physiology ecology and cultivation, Ministry of Agriculture and Rural Affairs of the People’s Republic of China
  • Lamine Diallo, Enping Zhang College of plant science, Jilin University, Changchun 130062, P.R China
  • Fanli Kong Jilin Academy of Agriculture Science/Key Laboratory of Northeast crop physiology ecology and cultivation, Ministry of Agriculture and Rural Affairs of the People’s Republic of China

Abstract

Delayed sowing (DS) is a critical factor influencing grain yield and quality under climate change. This study was conducted to determine maize grain yield and quality traits responses to DS and varied genotypes in rain-fed condition, northeast of China. Two typical hybrids ZD958 (higher starch type) and LM33 (higher protein type) and three sowing dates: 30 April (DS0) as normal, 10 May (DS10) and 20 May (DS20) were compared. Results demonstrated maize grain yield, biomass, kernel number per square, thousand kernel weight (TKW), grain nutrition yield, N concentration and grain test weight were significantly reduced by DS. Compared to high protein type LM33, high starch type ZD958 had a higher yield potential and lower yield reduction with delayed sowing. Grain yield loss under DS could be mainly attributed to reduction of the BMP and biomass, thereby leading to the reduction of TKW and kernels number per unit. DS didn’t affected grain nutritional content (starch, protein and oil), while significantly reduced grain nutrition yield of starch, oil and protein with delayed sowing. This study suggests that, early sowing should be recommended to the framers and varieties adjustments maybe a possible approach to reduce and compensate for the loss of yield caused by delayed sowing in rain-fed condition under climate change in NCP.

Keywords: Delayed sowing date; Rain-fed condition; Maize; Grain quality; Climate change
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How to Cite
Fentuan Yang, Xiaoli Jiang, Q. C. G. L., L. D. Enping Zhang, and F. Kong. “Maize Yield, Biomass and Grain Quality Traits Responses to Delayed Sowing Date and Genotypes in Rain-Fed Condition”. Emirates Journal of Food and Agriculture, Vol. 31, no. 6, Aug. 2019, pp. 415-2, doi:https://doi.org/10.9755/ejfa.2019.v31.i6.1969. Accessed 25 Jan. 2021.
Section
Research Article