Chickpea and temperature stress: An overview - Legumes Under Environmental Stress: Yield, Improvement and Adaptations - page 84

(a)

(b)

(c)

Figure 5.1 Heat-sensitive genotype anther structural abnormalities: anther stained with Alexander's stain. (a) Locule number
changed (ICC 4567). (b) Anther epidermis wall is thickened (ICC 4567). (c) Anther shows fertile and sterile pollen grain
(ICC 5912). Fertile - red in colour; sterile - green in colour. Scale: 10 μm.

produced smaller seeds (Nayyar et al., 2007; Kaur et al.,
2008). At 13/5°C, chickpea average seed weight and size
decreased by 41% and 24%, respectively, compared with
28/17°C, largely because seed filling duration reduced
from 20 days (non-stressed) to 14 days (cold stressed)
(Nayyar et al., 2005b). Similarly, low post-anthesis

temperature reduced yield by 1.3 t/ha in northern NSW,
Australia, during 2009 (Moore et al., 2010).
In a controlled environment study, Wang et al. (2006)
reported a grain yield reduction of 33-39% for post-
anthesis heat stress compared with pre-anthesis heat stress.
This was possibly due to poor remobilization of