Breaking seed dormancy in Setaria (foxtail) species is difficult, making them unsuitable for use as model plants. Using an electron microscope, we examined the structure of the seed coat surface of two Setaria species, the green foxtail (Setaria viridis) and the giant foxtail (Setaria faberi), to determine the characteristics that make seed dormancy difficult to break. We also tested the effects of physical treatment on Setaria seeds using four different treatments: (1) removing the outer seed coat, (2) removing the outer seed coat+mechanical scarification of the inner seed coat (the seeds were scarified using grit 350–2000 sandpaper), (3) removing the outer and inner seed coat, and (4) no treatment (control). We discovered a structure that was meant to repel water (the ‘lotus effect') during the electron microscope inspection. We discovered that removing the outer seed coat and mechanical scarification of the inner seed coat (second treatment) as well as removing the outer and inner seed coat (third treatment) can induce seed germination in Setaria species, whereas seed germination was not observed after removing only the outer seed coat and no treatment.
Author (S) Details
Inagaki Hidehiro
Faculty of Agriculture, Shizuoka University, 836, Ohya, Suruga-ku, Shizuoka 422-8529, Japan.
Sakakibara Takumi
Faculty of Agriculture, Shizuoka University, 836, Ohya, Suruga-ku, Shizuoka 422-8529, Japan.
View Book :- https://stm.bookpi.org/CTAS-V1/article/view/3885
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