Figure 2.

Drought Affects Development of Reproductive Organs.

(A) An example of WW inflorescences at C10, with one opened flower and many floral buds.

(B) At T10, growth of DT inflorescences was retarded and flower buds were much smaller than those of WW inflorescences.

(C) The newest opened flower (one petal was removed) from the WW inflorescence of (A). The filaments were sufficiently long for pollen grains to be deposited onto the stigma.

(D) The newest opened flower (one petal was removed) from the DT inflorescence of (B). The filaments were apparently too short to deliver the pollen to the stigma.

(E) Floral buds from the WW inflorescence, shown from the oldest (left, floral stage 12) to the youngest (right, stage 8).

(F) Floral buds from a DT plant at stage 12 to stage 8.

(G) A stage 12 floral bud from a WW inflorescence.

(H) A stage 12 floral bud from a DT inflorescence.

(I) Sepals and petals were removed from the floral bud in (G).

(J) Sepals and petals were removed from the floral bud in (H).

(K) to (N) Anther cross-sections of a C10 WW inflorescence from the second floral bud (K), fifth bud (L), eighth bud (M), and fourteenth bud (N).

(O) to (R) Anther sections of a T10 DT inflorescence from the first bud (O), third bud (P), fifth bud (Q), and eighth bud (R).

(S) to (W) Lengths of sepals (S), petals (T), anthers (U), filaments (V), and pistils (W). The data points and error bars represent the mean and se (n = 6).

(X) The ratio lengths of stamens to pistils. *Significantly different (P < 0.05). **Highly significant (P < 0.01) by a Student’s t test. The data points and error bars represent the mean and se (n = 6).

Bar in (A) to (J) = 1 mm; bar in (K) to (R) = 50 µm.