Decrease of Pollen Stainability of Green Bean at High Temperatures and Relationship to Heat Tolerance

in Journal of the American Society for Horticultural Science
Authors:
Katsumi SuzukiJapan International Research Center for Agricultural Sciences, Ishigaki, Okinawa, 907-0002 Japan

Search for other papers by Katsumi Suzuki in
ASHS
Google Scholar
PubMed
Close
,
Tadashi TsukaguchiJapan International Research Center for Agricultural Sciences, Ishigaki, Okinawa, 907-0002 Japan

Search for other papers by Tadashi Tsukaguchi in
ASHS
Google Scholar
PubMed
Close
,
Hiroyuki TakedaJapan International Research Center for Agricultural Sciences, Ishigaki, Okinawa, 907-0002 Japan

Search for other papers by Hiroyuki Takeda in
ASHS
Google Scholar
PubMed
Close
, and
Yoshinobu EgawaJapan International Research Center for Agricultural Sciences, Ishigaki, Okinawa, 907-0002 Japan

Search for other papers by Yoshinobu Egawa in
ASHS
Google Scholar
PubMed
Close

Pod yield of `Kentucky Wonder' green bean (Phaseolus vulgaris L.) decreased at high temperatures due to a reduction of pod set. A highly positive correlation was observed between pod set and pollen stainability in flowers that were affected by heat stress about 10 days before anthesis. Pollen stainability was decreased by heat stress applied 8 to 11 days before flowering under controlled environment conditions. When mean air temperature during this period exceeded 28 °C, pollen stainability decreased under field conditions. Low pollen stainability indicated sensitivity to high temperatures about 10 days before flowering. A heat-tolerant cultivar showed higher pollen stainability than did heat-sensitive cultivars under high temperatures. These results demonstrated that heat tolerance at an early reproductive stage could be evaluated by analyzing pollen stainability using flowers developed under high temperatures.

  • Collapse
  • Expand

 

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 93 93 8
PDF Downloads 185 185 5