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