E-ISSN 2090-0503 | ISSN 1687-7497
 

Original Research 


Seed and germination traits of the summer weed Trianthema portulacastrum L.

Gamal M. Fahmy, Sanna A.I Moussa, Hussein F. Farrag, Rasha A.S. Abd EL Rehem.

Abstract
Trianthema portulacastrum L. is one of the problematic terrestrial summer weeds. It competes with various agricultural crops. The present investigation aimed to investigate the traits, which enable the seeds to disperse, germinate, grow and adapt to habitat conditions. The plant produces large number (1931 seeds) of small seeds (1.08 mg seed-1). Scanning electron microscopy of the seed testa revealed that the anticlinal walls of the epidermal cells were penta-hexagonal, and highly raised, while the periclinal walls were sunken. This pattern leads to the porous appearance of the testa. The effects of temperature on seed germination were monitored under continuous light and continuous dark conditions. Under light conditions, the percentages of seed germination were significantly higher than at the dark conditions. Higher temperatures of 35, 40 and 45 C promoted the seed germination. In the temperature range from 30 to 45 C, the plumule lengths of the seedlings germinated in the light conditions were smaller than those grown under dark conditions. Under all conditions, the length of radicle was higher than the plumule. The traits of seeds, germination, and seedlings grown under experimental conditions are discussed in terms of the seed dispersal and potential adaptations of seedlings to the environment.

Key words: Arable weeds, seed surface features, germination, seedlings, light, dark, heat


 
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How to Cite this Article
Pubmed Style

Fahmy GM, Moussa SA, Farrag HF, Rehem RAAE. Seed and germination traits of the summer weed Trianthema portulacastrum L.. Egypt. J. Exp. Biol. (Bot.). 2019; 15(2): 235-242. doi:10.5455/egyjebb.20190618082647


Web Style

Fahmy GM, Moussa SA, Farrag HF, Rehem RAAE. Seed and germination traits of the summer weed Trianthema portulacastrum L.. http://www.egyseb.net/?mno=53204 [Access: October 20, 2019]. doi:10.5455/egyjebb.20190618082647


AMA (American Medical Association) Style

Fahmy GM, Moussa SA, Farrag HF, Rehem RAAE. Seed and germination traits of the summer weed Trianthema portulacastrum L.. Egypt. J. Exp. Biol. (Bot.). 2019; 15(2): 235-242. doi:10.5455/egyjebb.20190618082647



Vancouver/ICMJE Style

Fahmy GM, Moussa SA, Farrag HF, Rehem RAAE. Seed and germination traits of the summer weed Trianthema portulacastrum L.. Egypt. J. Exp. Biol. (Bot.). (2019), [cited October 20, 2019]; 15(2): 235-242. doi:10.5455/egyjebb.20190618082647



Harvard Style

Fahmy, G. M., Moussa, . S. A., Farrag, . H. F. & Rehem, . R. A. A. E. (2019) Seed and germination traits of the summer weed Trianthema portulacastrum L.. Egypt. J. Exp. Biol. (Bot.), 15 (2), 235-242. doi:10.5455/egyjebb.20190618082647



Turabian Style

Fahmy, Gamal M., Sanna A.I Moussa, Hussein F. Farrag, and Rasha A.S. Abd EL Rehem. 2019. Seed and germination traits of the summer weed Trianthema portulacastrum L.. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 15 (2), 235-242. doi:10.5455/egyjebb.20190618082647



Chicago Style

Fahmy, Gamal M., Sanna A.I Moussa, Hussein F. Farrag, and Rasha A.S. Abd EL Rehem. "Seed and germination traits of the summer weed Trianthema portulacastrum L.." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 15 (2019), 235-242. doi:10.5455/egyjebb.20190618082647



MLA (The Modern Language Association) Style

Fahmy, Gamal M., Sanna A.I Moussa, Hussein F. Farrag, and Rasha A.S. Abd EL Rehem. "Seed and germination traits of the summer weed Trianthema portulacastrum L.." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 15.2 (2019), 235-242. Print. doi:10.5455/egyjebb.20190618082647



APA (American Psychological Association) Style

Fahmy, G. M., Moussa, . S. A., Farrag, . H. F. & Rehem, . R. A. A. E. (2019) Seed and germination traits of the summer weed Trianthema portulacastrum L.. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 15 (2), 235-242. doi:10.5455/egyjebb.20190618082647