Assessment of Factors Influencing Texas Wild-Rice (Zizania texana) Sexual and Asexual Reproduction
|Author||P Power (San Marcos National Fish Hatchery and Technology Center) and FM Oxley (Lady Bird Johnson Wildflower Center)|
|Description||Laboratory and field studies on critical determinants of reproduction in Texas Wild-Rice (Zizania texana)|
|Publisher||San Marcos National Fish Hatchery and Technology Center and Lady Bird Johnson Wildflower Center|
|Location||San Marcos River|
The purpose of this study was to identify factors that influence sexual and asexual reproduction of Texas Wild-rice (Zizania texana). Data collected during the study were used to examine the characteristics of pollen viability and dispersal, stigma viability, ability to self-pollinate, seed production and quality, minimum distances for successful pollination within and among stands, and asexual output. New information regarding pollination success and seed production for Texas Wild-rice was documented. The study was completed in June 2004 by the U.S. Fish and Wildlife – San Marcos National Fish Hatchery and Technology Center and the Lady Bird Johnson Wildflower Center.
[Excerpted from the Executive Summary]
The combined information in the chapters of this report creates a description of the reproductive biology of Z. texana. Pollen is released during the relatively cool morning hours (between 0200 and 0400) and is short lived (