Diversity and Distribution of Anatomical Characteristics Involved with Drought Resistance of Inter-Specific (Saccharum spp. Hybrid × S. spontaneum) Sugarcane F1 Hybrid Population

Diversity and Heterosis of Leaf Anatomical Traits in Backcross 1 (BC1) Derived from Interspecific Hybridization between Commercial Cane (Saccharum spp. Hybrid) and Wild Type (S. spontaneum)

“…Regarding leaf anatomy, the sugarcane ideotype of drought-tolerant cultivars should have high cuticle thickness and stomatal crypt depth [29,49]. Drought conditions may adversely reduce the bulliform cell area in sugarcane, and drought-tolerant cultivars possessed smaller bulliform cells than susceptible cultivars [31,49]. Nevertheless, the correlations among leaf anatomical traits may not be persistent due to several factors such as genetic backgrounds, developmental stages, climatic changes, and environmental managements [29].…”

“…The measurements included leaf thickness (LT), cuticle thickness (CT), the vertical length of bulliform cell (VBC), and stomatal crypt depth (SCD). In addition, a relative proportion of CT, VBC, and SCD to the leaf thickness was calculated according to Jumkudling et al [31] and presented in percentage unit, as follows: Stalk weight was observed at 10 months after planting by harvesting all stalks taken from each clone and weighing those stalks per clone. The measurement was performed for both BC1 individuals and their respective parents.…”

“…hybrid and S. spontaneum. They found that approximately 47%, 39%, and 39% of 23 F 1 clones had high stomatal crypt depths, small bulliform cells, and high cuticle thickness, respectively [31]. Those anatomical properties can be applied in breeding programs to select drought-tolerant parents for their plasticity under drought stress conditions [29].…”

“…The properties of leaf anatomy may depend upon sugarcane genetic backgrounds, making them useful in line selections for stress-tolerant cultivars [29]. Previous studies reported that anatomical responses to drought were associated with increases in bulliform cells, lamina thickness [29,30], stomatal crypt depths, and cuticle thickness [31]. Jumkudling et al [31] investigated the diversity and distribution of leaf anatomy among F 1 individuals derived from interspecific hybridization between Saccharum spp.…”

“…Previous studies reported that anatomical responses to drought were associated with increases in bulliform cells, lamina thickness [29,30], stomatal crypt depths, and cuticle thickness [31]. Jumkudling et al [31] investigated the diversity and distribution of leaf anatomy among F 1 individuals derived from interspecific hybridization between Saccharum spp. hybrid and S. spontaneum.…”