by analyzing a jatropha genome , nf - yb - encoding genes of seq id nos : 1 to 11 , fragments of nf - yb - encoding genes of seq id nos : 12 and 13 , and genes relating thereto were found . by transforming jatropha with these nf - yb - encoding genes and the like , it is possible to overexpress a nf - yb polypeptide and so on , and to significantly improve the productivity of protein synthesis involved by the nf - yb polypeptide , and to significantly improve the dry stress resistance , for example . as a result , it is possible to create dry stress resistant jatropha capable of ensuring high growth even under water deficient conditions .