منابع مشابه
Transcript profiles of maize embryo sacs and preliminary identification of genes involved in the embryo sac–pollen tube interaction
The embryo sac, the female gametophyte of flowering plants, plays important roles in the pollination and fertilization process. Maize (Zea mays L.) is a model monocot, but little is known about the interactions between its embryo sac and the pollen tube. In this study, we compared the transcript profiles of mature embryo sacs, mature embryo sacs 14-16 h after pollination, and mature nucelli. Co...
متن کاملApomixis: Embryo Sacs and Embryos Formed without Meiosis or Fertilization in Ovules.
The term apomixis has, in the past, been used as a general term for any form of asexual reproduction in plants, including vegetative propagation. This original definition has become more restricted and now covers only those asexual reproductive processes that, paradoxically, occur in the ovule of flowering plants-the structure that has evolved to carry out female sexual reproductive functions i...
متن کاملA Review of Plant Embryo Culture
Departme Tusa, N., J.W. Grosser, and F.G. Gmitter, Jr. 1990. Plant regeneration of ‘Valencia’ sweet orange, ‘Femminello’ lemon, and the interspecific somatic hybrid following protoplast fusion. J. Amer. Soc. Hort. Sci. 115:1043– 1046. Vardi, A., P. Arzee-Gonen, A. Frydman-Shani, and S. Bleichman. 1989. Protoplast fusion mediated transfer of organelles from Microcitrus and Citrus and regeneratio...
متن کاملThe Joy of Sacs
This paper investigates an idea that was put forward (and hinted at in Fitch, 2000) by Tecumseh Fitch at the Cradle of Language conference in Stellenbosch, South Africa. The idea is that air sacs may have played an important role in early hominid vocalizations. Many other primates have air sacs, notably chimpanzees, gorillas and orangutans. It is therefore likely that our latest common ancestor...
متن کاملSACS, QEP, and Hindsight
As institutions in the Southeastern section prepare for reaffirmation of accreditation by the Southern Association of Colleges and Schools (SACS), fundamental changes have been implemented that have a significant impact on the institution and academic programs. One of the major additions is SACS core requirement 2.12 that requires an institution to prepare a Quality Enhancement Plan (QEP). The ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Science
سال: 1900
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.12.296.347