Length distribution of clean reads in Ziziphus spina-christi (A) and sunflower (B) pollens. In Ziziphus samples 24 nt sRNAs had the largest number, followed by 22 nt sRNAs (Fig. 2A). In sunflower samples 22 nt sRNAs had the highest proportion followed by 24 nt sRNAs (Fig. 2B)
