Figure 3: PT growth observations of the reciprocal crossing.
From: Natural variation in PTB1 regulates rice seed setting rate by controlling pollen tube growth
(a) PT growth within pistils of the cross WT(♀) × WT(♂). (b) PT growth within pistils of the cross WT(♀) × ptb1 (♂). (c) PT growth within pistil styles of the cross ptb1(♀) × WT(♂). (d) PT growth within the ovary of the cross ptb1(♀) × WT(♂). (e) PT growth within pistil styles of the cross ptb1(♀) × ptb1 (♂). (f) PT growth within the ovary of the cross ptb1(♀) × ptb1 (♂). ♂, crossed as male parents; ♀, crossed as female parents. Arrows indicate the PT tip. Samples for fluorescence microscopic observation were collected at 2 h AP, n>30. Scale bars, 400 μm.
