TY - JOUR
T1 - Effects of pollination intensity on the vigor of the sporophytic and gametophytic generation of Cucurbita texana
AU - Jóhannsson, Magnús H.
AU - Stephenson, Andrew G.
N1 - Funding Information:
&p.2: wledgements We thank Robert Oberheim and the Department of Horticulture for use of the Pennsylvania State University Agricultural Experimental Station at Rocksprings Penn. We thank Germán Avila, Melissa Gates, Sara Good, Donna Vogler and James Winsor for comments and Chandreyee Das, Matthew Herbi-son, Scott Levin, Shani Peretz, Brian Svedberg, Jeremy Waldman and Christopher Ward for field and lab assistance. This work was supported by National Science Foundation grant DEB—93–18224 to A.G.S.
PY - 1997
Y1 - 1997
N2 - We examined the effects of pollen competition (pollen load size) on sporophytic vigor and gametophytic performance in Cucurbita texana, a wild gourd, while controlling for alternative interpretations of the data. Under field conditions we compared the vigor of progeny produced from large and small pollen loads and examined the in vitro performance of the pollen produced by the progeny. We found that the progeny from large pollen loads germinated faster and had a greater reproductive output (male flowers and fruits) than progeny produced from small pollen loads. In addition, we found that the pollen produced on plants derived from large pollen loads grew faster in vitro than the pollen produced on plants derived from small pollen loads. These findings indicate that pollen competition affects the performance of the resulting sporophytic generation and the microgametophytes they produce.
AB - We examined the effects of pollen competition (pollen load size) on sporophytic vigor and gametophytic performance in Cucurbita texana, a wild gourd, while controlling for alternative interpretations of the data. Under field conditions we compared the vigor of progeny produced from large and small pollen loads and examined the in vitro performance of the pollen produced by the progeny. We found that the progeny from large pollen loads germinated faster and had a greater reproductive output (male flowers and fruits) than progeny produced from small pollen loads. In addition, we found that the pollen produced on plants derived from large pollen loads grew faster in vitro than the pollen produced on plants derived from small pollen loads. These findings indicate that pollen competition affects the performance of the resulting sporophytic generation and the microgametophytes they produce.
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U2 - 10.1007/s004970050092
DO - 10.1007/s004970050092
M3 - Article
AN - SCOPUS:0030817133
SN - 0934-0882
VL - 10
SP - 236
EP - 240
JO - Sexual Plant Reproduction
JF - Sexual Plant Reproduction
IS - 4
ER -