Field Guide of Discovery-based Exercises for - Aseanipm ...

Section 7 • Participatory Plant Breeding, Seed Production, Harvest, and Post-Harvest Management
Inspection of Pollinated Eggplant Flowers:
5 After pollination, wait for 3-4 days and inspect crosses.
5 Remove bags and check if baby fruits are developing and tags are still attached.
5 After 7-10 days, check for percentage of successfully pollinated flowers by counting the
number of baby fruits developed per cross as follows:
% Set Seed =
Number of flower buds x 100
Total number of pollinated flower buds
5 After 25-30 days, fruits are mature and ready for seed harvest.
5 Take note of all relevant observations and experiences during this activity.
5. Synthesize and summarize output of small groups into one big group output. Draw up
conclusions and recommendations from this exercise.
some suggested questions for processing discussion
❏ What are the similarities and differences in plant morphology of a string bean and an eggplant?
❏ What are the similarities and differences in flower morphology of a string bean and an eggplant?
❏ Why do we need to monitor flowering stages of parent varieties?
❏ Why do we emasculate and pollinate flowers during hybridization of string bean and eggplant?
❏ When are the best times for emasculation and pollination of string bean and eggplant flowers
for successful hybridization?
❏ What is the use of a variety crossing table? What are the reasons for low success rate of your
hybridization work?
❏ What is the purpose of bagging and tagging of emasculated and pollinated string bean and
eggplant flowers?
❏ What is the most productive and cost efficient way to hybridize two varieties?
❏ How many successful crosses do we need to build a successful hybridization program? How
many crosses can you manage?
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