Germination of Seeds from Flowers along a Continuum of Long to Short Styles in the Cold Desert Perennial Herb Ixiolirion songaricum

Juanjuan Lu, Haiyan Yi, Dunyan Tan, Carol C. Baskin, Jerry M. Baskin

Research output: Contribution to journalArticlepeer-review

Abstract

We compared seed set, mass, and dormancy/germination of seeds from flowers at three points on the style-length continuum [long (LS), intermediate (IS), and short (SS) styles] in Ixiolirion songaricum. The effects of open and hand pollination (self and cross with pollen from upper and lower-level stamens) on seed set, mass, and dormancy/germination were assessed. Most freshly-matured seeds from LS, IS, and SS flowers were dormant, and dormancy was broken under laboratory and field conditions. After-ripened seeds from LS and IS flowers germinated to significantly higher percentages than those from SS flowers. In all pollination treatments, seed set and mass were significantly higher for LS and IS than for SS flowers. Seed set, mass, and germination for LS, IS, and SS flowers were significantly higher in open-pollinated and in cross-pollinated with pollen from upper and lower-level stamens than in self-pollination with pollen from upper-and lower-level stamens. These differences in offspring reproductive traits may be adaptive for I. songaricum in its rainfall-unpredictable environment. This is the first study to demonstrate the association between style length and germination in a species with continuous variation in style length.

Original languageEnglish
Article number1452
JournalPlants
Volume11
Issue number11
DOIs
StatePublished - Jun 1 2022

Bibliographical note

Funding Information:
Funding: This research was supported in part by the Excellent Youth Foundation of Natural Science Foundation of Xinjiang Uygur Autonomous Region of China (2021D01E21), the National Natural Science Foundation of China (32071668, U1803331, 32160265), and Training Project for Excellent Youth Science and Technology Scholars of Urumqi Science and Technology Talent Foundation of China.

Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

  • bet-hedging strategy
  • continuous variation in style length
  • germination
  • physiological dormancy
  • seed size/mass

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science

Fingerprint

Dive into the research topics of 'Germination of Seeds from Flowers along a Continuum of Long to Short Styles in the Cold Desert Perennial Herb Ixiolirion songaricum'. Together they form a unique fingerprint.

Cite this