S-RNase is secreted from transmitting tract cells into the intercellular spaces after pollen tubes enter the style in apple (Malus pumila Mill.) - Li, Tian-Zhong; Katoh, Naoki; Miyairi, Kazuo; Okuno, Toshikatsu (The journal of horticultural science & biotechnology, 2007)
Keywords: apples; biotechnology; cross pollination; cultivars; cytoplasm; electron microscopy; extracellular space; gametophytes; horticulture; immunohistochemistry; light microscopy; Malus pumila; pistil; pollen tubes; ribonucleases