Patent ID: 8053636

Claim:
A method of producing a cotton plant which has a higher yield under adverse growing conditions comprising the steps of a) introducing a chimeric gene into a cotton cell, to generate a transgenic cotton cell, said chimeric gene comprising the following operably linked DNA fragments: i) a plant expressible promoter; ii) a transcribable DNA region comprising; (1) a first DNA region comprising a nucleotide sequence of at least 100 consecutive nucleotides selected from the nucleotide sequence of a parp2 gene or of a parp2, cDNA wherein said nucleotide sequence of said parp2 gene or parp2 cDNA comprises the nucleotide sequence of any one of SEQ ID No.: 5, SEQ ID No.: 6, SEQ ID No.: 7, SEQ ID No.: 8, SEQ ID No.: 9, SEQ ID No.: 10, SEQ ID No.: 11 or SEQ ID No.: 12 or comprises a nucleotide sequence encoding a protein comprising the amino acid sequence of SEQ ID No.: 13; (2) a second DNA region comprising a nucleotide sequence of at least 100 consecutive nucleotides selected from said first DNA region; whereby said first DNA region and said second DNA region are in inverted repeat orientation with each other and wherein an RNA molecule transcribed from said transcribable region is capable of forming a double stranded RNA region between an RNA region transcribed from said first DNA region and an RNA region transcribed from said second DNA region; and iii) a DNA region comprising a transcription termination and polyadenylation signal functional in plants; b) regenerating said transgenic cotton cell to obtain a transgenic cotton plant; and c) identifying a transgenic cotton plant which has a higher yield under adverse growing conditions than an untransformed cotton plant under said adverse growing conditions, wherein said adverse growing conditions are drought, high temperatures, limited supply of nutrients or high light intensities.