Crop Improvement
Varieties released
1. Varagu- APK 1
Released during 1991
Duration : 110-120 days
Yield : 1800 – 220 kg/ha
2.Blackgram- APK 1
Released during 1993
Duration : 60 days
Suitable for intercropping with cotton
Drought resistance and high yielder-650 kg/ha
3. Oyster Mushroom- APK 1
Released during 1995
Mushroom appear in about 7-12 days
Keeping quality – 72 hours
Fibrecontent : 56 %
4. Cholam- APK 1
Released during 1996
Hybrid derivative of TNS 30x CO 26
Duration : 105 – 110 days
Non-lodging type
Grain yield: 2600 kg/ha
Stover yield: 7 tons/ha
5. Milky Mushroom – APK 2
Released during 1997
Duration : 40-45 days
Shelf life : 3 to 5 days
Protein content : 32.3 %
Yield : 356 gm/bed
6. Redgram- APK 1
Released during 1999
Short duration : 95 – 105 days
High yielding type suitable for all seasons
Resistant to YMV, suitable for inter cropping
Uniformity in bearing
Yield : 900 kg/ha
7. Custard Apple – APK 1
Released during 2003
Yield potential : 15 kg/tree
Number of fruits : 72/tree
Fruit weight : 208 g/fruit
Medium sized, heart shaped fruits
TSS : 24.5brix
Tolerant to drought
Manila Tamarind (Pithacellobium dulce)
Through survey collected eight (8 No.) high yielding and good quality manila tamarind genotypes from different parts of Tamil Nadu. genotypes accessions. All the types were grafted vegetativelyand are under evaluation. All the seven types registered with NBPGR, New Delhi and IC number obtained for the same. The IC no. obtained are IC 0625747, IC 0625748, IC 0625749, IC 0625750, IC 0625751, IC 0625752, IC 0625753 and IC 0625754.
Jamun (Eugenia jambolana)
By survey and collection three (03 No.) high yielding jamun genotypes collected and multiplied through soft wood grafting. All the genotypes are registered with NBPGR, New Delhi. The IC no. are IC 0625744, IC 0625745 and IC 0625746. At present all the types are maintaining at RRS, Aruppukottai.
Ber (Ziziphus jujube)
In ber 25 no. of genotypes collected through survey and 9 released varieties are being maintained at this center. Among the genotypes evaluated, the variety Kaithali registered increased yield and quality.
Custard apple (Annona squamosa)
In custard apple 5 No. of released varieties and 14 no. of genotypes has been maintained at this center. Among the varieties evaluated, the highest yield was observed in APK(Ca) 1