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A morphological, cytological and embryological investigation was conducted on the early development of embryo and endosperm in polyembryonic rice (Oryza sativa L.) ApIII. We found that the percentage of single-, twin- and triple-seedlings from mature caryopses was 82.4–85.6%, 11.3–14.6% and 2.0–3.8%, respectively. From twin-seedlings one of the plants and in the triple-seedlings usually two seedlings...
Megasporogenesis and megagametogenesis in Leymus chinensis and the callose deposition during these developmental processes were investigated. In addition, morphological and histochemical studies of pistils at anthesis and pollen behavior on the stigmas after pollination were examined. The results indicate that embryo sac development and callose deposition pattern of this grass follow the archetypal...
Leymus chinensis is an economically and ecologically important grass that exhibits low seed production. To better understand the causes of its low sexual reproductivity, the microsporogenesis and pollen development of this species were investigated, with emphasis on dynamic changes in callose deposition. A variety of histochemical stains were employed, including Heidenhain's hematoxylin, decolorized...
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