EVALUATION AND SELECTION OF SPIDERPLANT (CLEOME GYNANDRA L.) VARIETIES SUITED FOR PRODUCTION IN KENYA
Abstract
Limited  access  by  farmers  to  improved  spider  plant (Cleome  gynandra) varieties  and  low fertilizer  use 
are major causes of low leaf yields for this crop. Surveys have shown that the crop is among traditional leafy  vegetables  whose  consumption  is  on  the  increase  in  Kenya.  Greenhouse  and  field  experiments were conducted in 2011 and 2012 in Ruiru and Juja. Objectives were: to determine the plant growth and yield;   to   undertake   a   survey   of   both   farmer   and   consumer   preference;   and   to   establish   their comparative nutritional profile under different agronomic conditions. 8 lines that were developed at the World  Vegetable  Centre,  Arusha,  were  evaluated  alongside  the  commercial  variety  (control).  They included  UGSF25,  MLSF17,  UGSF3,  UGSF14,  UGSF25,  UGSF36,  IP3  and  UGSF9.  All  experiments  were undertaken  for  2  seasons,  where  both  variety  and  nitrogen  factors  were  investigated  under  split plot design.  Measurements  were  done  to  quantify  growth  in  terms  of  height,  leaf  number,  yield,  leaf  area,SPAD  and  dry  weight.  Plants  were  harvested  at  710  day  intervals.  Data  was  analysed  in  SAS  9.1  and SPSS software.  Varieties  were  ranked  from  19  in  terms  of  performance.  The  top  5  varieties MLSF17, UGSF14,   UGSF36,   UGSF9   and   control   were   selected   for   further   evaluation.   Market   survey   and participatory  evaluation  for  both  sensory  tests  and  on farm  farmer  surveys  were  undertaken  for  both crop  seasons  I  and  II.  Results  indicated  that  line  MLSF17  had  the  highest  yields  followed  by  UGSF14,Control,  UGSF9  and  UGSF36  respectively  at  p 
≤ 0.05. However, there was no significant difference for varietal  preference  by  spider  plant  growers  and  consumers.  Availability  of  improved  and  high  yielding spider  plant  cultivars  will  leverage  farmers  to  cultivate  this  crop  and explore  different  agro  ecological zones for increased leaf yield.

