Drought constitutes a significant constraint on sugarcane productivity. Therefore, understanding how different sugarcane varieties respond to drought stress can facilitate breeding programs and establish selection criteria for drought-tolerant varieties. In the present study, we examined eight morpho-physiological characters of sugarcane. They trigger different biochemical and physiological responses which could alter several morpho-agronomic characteristics linked to yield. In the present study, it is hypothesized that drought limits crop growth and is a significant problem in the commercial production of Saccharum officinarum sugarcane. Drought tolerance in sugarcane induced by nitrogen-fixing endophytic bacteria is a complex biological process that ranges from alterations in gene expression and cellular metabolism to changes in growth and productivity; Introduction. Environmental stresses limit plant growth and crop productivity Mahajan and Tuteja, 2005 Lobell et al. 2011. Drought is considered the most deleterious abiotic stress affecting crop productivity worldwide Wang et al. 2003 Rampino et al. 2006. Sugarcane, an important source of sugar and ethanol, is a relatively high resource, DOI: 10.3724 SP.J.1006.2011. ID: 87129084 Comparison of physiological and biochemical characteristics linked to cold resistance of sugarcane under field conditions: Comparison of physiological and biochemical characteristics linked to cold resistance of sugarcane under field conditionsBreeding strategies conventional and current programs. Contemporary sugarcane cultivars are generated as a result of interspecific hybridization between Saccharum officinarum, a high sugar species having chromosome number n, a base chromosome number of 10, and Saccharum spontaneum, a zone of wild sugarcane crop exposed to erratic rainfall, resulting in several water deficit events during crop development. Plants have the ability to promote physiological effects and. Summary In order to screen cold tolerant sugarcane. varieties, in Ziyuan County, one of the coldest counties. having the longest duration of frost and snow, in Guangxi. province us. Low regrowth capacity of sugarcane can limit crop productivity and profitability of sugarcane producers. The objective of this study was to determine the association of physiological responses and root distribution patterns on second-growth cane yield, as well as the relationships between these traits. Seventeen sugar canes,