Emasculation and pollination in redgram
- 1. FUNDAMENTALS OF PLANT BREEDING 3(2+1) EMASCULATION AND POLLINATION TECHNIQUES IN REDGRAM BY TO BASKAR S Dr.DHIVYAPRIYA D BATCH-’A’ Asst.Prof. CB.AG.U4AGR19018 19GPB201
- 2. RED GRAM DESCRIPTION Common name : Pigeon pea Family : Fabaceae Scientific name : Cajanus cajan Chromosome number : 2n=22 FLORAL DESCRIPTION Bisexual and self pollinated flower (closer proximity & simultaneous maturity of stigma and anther). But, natural cross pollination also often takes place by insects (honey bees).
- 4. EMASCULATION & POLLINATION Emasculation is a artificial hybridization technique in which anthers or stamens are removed from one plant and pollens are collected from other desirable plant and then pollination (dusting of collected pollen) should be done. HAND EMASCULATION Select one or two days latter opened large flower. Remove the petals and anthers or stamens from female parent by using forceps.
- 5. POLLEN COLLECTION Remove the corolla and collect pollen from the male parent (bud) before anthesis. Pollen viability VIABLE IN BUD REFRIGIRATOR Temperature 25-28˚C 10˚C Relative humidity 50% 37% Time 42hrs 11 days
- 6. POLLINATION Pollinate the pollen on stigma of emasculated flower by using brush. Pollination should be done immediately after emasculation. Bag the pollinated flower to prevent out crossing and tag it for identification.
- 7. POD DEVELOPMENT A week after pollination the pods become visible. STAGES DAYS complete their development 15-20 days seed attains physiological maturity 30-35 days ready for harvest 40 days Maintenance of records Female parent Male parent Date of emasculation and pollination Number of buds emasculated and pollinated Number of buds with pod formation (after a week) Number of pods matured and harvested.
- 8. POLLINATION SUCCESS Flowers fertilized (%) = (No. of pod harvested x 100)/ No. of buds pollinated HARVESTING AND STORAGE Seed is harvested at physiological maturity 30-35 days after pollination. It should be dried to a low moisture content (about 6%) and stored in fully labelled containers indicating parentage , season, and year of crossing.