Assemble Reads According To Blast Result

Dear all, I performed blast using ~200 gene sequences from reference organism against a draft genome dataset from related species ( containing 12million short reads(sr), each of which is 88bp). The following examplifies the blast result.

----------length, strand + /-, e-value ommited, some numbers are wrong---------------

sr-ID    GeneID    Iden.    Start(sr)    End(sr)    Start(gene)    End(gene)
Sxxx001    Gene1    100    1    36    2302    2334
Sxxx002    Gene1    98    1    75    313    348
Sxxx004    Gene1    100    3    43    481    519
Sxxx001    Gene2    100    8    78    2140    2172
Sxxx006    Gene2    97    2    88    280    312
Sxxx007    Gene3    100    1    56    862    897
Sxxx008    Gene3    100    6    78    2020    2055
Sxxx009    Gene3    100    5    77    3934    3972

I can get each short read sequence ranging from start(sr) to end (sr) . However, next step is troublsome; I need to assemble short reads to longer sequence according to the corresponding gene hit. e.g., need to assemble Sxxx001, Sxxx002, Sxxx004 according to Gene1; and assemble Sxxx001 and Sxxx006 according to Gene2, etc.

This analysis aims to identify the homologous genes from the draft genome data. Could anyone help to describe ways to assembling sequences according to blast result?

THANK YOU in advance!!