Silkworm races

Last modified at 24/08/2016 13:41 by System Account

Silkworm races Introduction


Silkworm breeding is an art to develop better varieties to suit different conditions. Keeping the requirement of the industry in view, various countries have developed races to suit their local agro climatic conditions to increase the quality and productivity. In this context, silkworm races play a very important role in the development of sericulture industry. In tropical countries, high temperature, low humidity, poor rearing management poor mulberry quality, high incident of diseases etc are mainly responsible for partial success of crops at the farmers� level . To suit the such prevailing conditions, robust races are required.

Among various genetic principles and breeding techniques, the utilization of hybrid vigor was one of the major breakthroughs which contributed to the success. Depending upon various factors, different cross-breeding techniques have been employed. Multivoltine (MV) x MV, (ex: PM x C Nichi, PM x C110) mainly for rain fed, low input conditions; MV x Bivoltine (BV) (ex: PM x CSR2, MH1 x CSR2) for average climatic and input conditions and BV x BV ( ex: CSR2 x CSR4 ) for favorable season and/or better input conditions. Research institutes have developed suitable robust BV x BV hybrid combinations ( ex: KSO-1xSP2, CSR18 x CSR19) for average conditions and double hybrids (BV x BV) x (BV x BV ) for high input conditions.

Various research institutes and universities in the country have evolved a number of races suited to tropical climate. Several hybrids have been authorized at national level.

Sl No Combination Hybrid Recommended for Season Authorization Date
1 P2D1 X NB18 CB AP WINTER 31-7-1995
    WB,AS,BH,OR,MP SPRING 31-7-1995
    UP SUMMER, AUTUMN 31-7-1995
2 MY1XNB18 CB WB,AS,BH,OR,MP SPRING, RAINY 31-7-1995
3 NX(NB18XP5) CB WB RAINY 31-7-1995
    AS,BH,OR,MP SUMMER, AUTUMN 31-7-1995
4 HS6XKA BV WB SPRING, RAINY 31-7-1995
    AS,BH,OR,MP SUMMER, AUTUMN 31-7-1995
    JK,OR,MP SPRING 31-7-1995
5 MYSOREXNB18 CB AS,BH,OR,MP SUMMER 31-7-1995
6 CA2XNB4D2 BV AS,BH,OR,MP SPRING 31-7-1995
    JK,UP SPRING/RAINY 31-7-1995
7 NB18XP5 BV AS,BH,OR,MP WINTER 31-7-1995
8 YS3XSF19 BV JK,UP SPRING 31-7-1995
9 HS6XNB4D2 BV JK,UP SPRING 31-7-1995
10 PAM101XNB4D2 BV JK,UP RAINY, WINTER 31-7-1995
11 CC1XNB4D2 BV JK,UP RAINY, WINTER 31-7-1995
12 PAM101XSF19 BV JK,UP RAINY 31-7-1995
13 SKUAST1XSKUAST6 BV JK SPRING 19-02-1996
14 RD1XNB18 CB UP SUMMER,RAINY 31-7-1995
15 BL23XNB4D2 CB RAINFED AREA SPRING  8-5-1997
16 BL24XNB4D2 CB RAINFED AREA SPRING, RAINY  8-5-1997
17 CSR2XCSR4 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  8-5-1997
18 CSR2XCSR5 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  8-5-1997
19 CSR2XCSR4 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  4-5-1999
20 CSR18XCSR19 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  4-5-1999
21 CSR17XCSR18 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  4-5-1999
22 CSR3XCSR6 BV SOUTH INDIA,TEMPERATE SUMMER  4-05-1999
23 KSO1XSP2 BV TROPICAL SPRING, RAINY  4-05-1999
24 APS5XAPS4 BV NORTH INDIA SPRING, RAINY  27-02-2002
25 APM1XAPS8 CB SOUTH INDIA,TEMPERATE SPRING, RAINY  27-02-2002
26 BL43XNB4D2 CB SOUTH INDIA,TEMPERATE SPRING, RAINY  27-02-2002
27 CSR6XCSR26 X CSR2XCSR27 DH THROUGHOUT INDIA SPRING, RAINY  15-09-2005
28 CSR48XCSR5 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  15-09-2005
29 DUN6XDUN22 BV NORTH INDIA SPRING, RAINY  15-09-2005
30 CSR2AXCSR4A BV SOUTH INDIA,TEMPERATE SPRING, RAINY  15-09-2005
31 BL67XCSR19 CB THROUGHOUT INDIA ALL SEASONS  15-09-2005
32 MYSOREXCSR2 CB SOUTH INDIA,TEMPERATE ALL SEASONS  15-09-2005
33 NXYB CB WB ALL SEASONS  15-09-2005
34 BL67AXCSR101A CB SOUTH INDIA,TEMPERATE ALL SEASONS  15-09-2005
35 Varuna(BL24XC.NICHI) CB SOUTH INDIA,TEMPERATE ALL SEASONS  15-09-2005
36 NXM12(W) MH WB SUMMER  15-09-2005
37 APS105XAPS126 BV AP,TN,WB ALL SEASONS  18-04-2010
38 APS45XAPS12 BV TN,JK ALL SEASONS  18-04-2010
39 CSR46XCSR47 BV UK,HP,UP,KR,AP,OR,WB,AS ALL SEASONS  18-04-2010
40 DUN17XDUN18 BV HP,KR,WB,AS ALL SEASONS  18-04-2010
41 GEN3XGEN2 BV AP,TN,WB,AS,JK ALL SEASONS  18-04-2010
42 KSO1XNP4 BV KR,HP,JK ALL SEASONS  18-04-2010
43 NK2XNP4 BV AS,JK ALL SEASONS  18-04-2010
44 SLD2XSLD8 BV KR,AP,TN,WB,AS,JK ALL SEASONS  18-04-2010
45 APDR15XAPDR115 CB KR,WB ALL SEASONS  18-04-2010
46 APM2XAPDR105 CB KR,AP,TN,WB ALL SEASONS  18-04-2010
47 APM3XAPS12 CB KR,WB ALL SEASONS  18-04-2010
48 MCON1XBCON4 CB KR,AP,TN,WB,JR ALL SEASONS  18-04-2010
49 MCON4XBCON4 CB WB,OR,JR,AS ALL SEASONS  18-04-2010
50 MH1XCSR2 CB UP,KR,AP,TN,OR ALL SEASONS  18-04-2010
51 PMXCSR2(SL) CB KR,AP,TN,AS,MN ALL SEASONS  18-04-2010
52 MCON1XMCON4 MH KR,AP,TN,WB ALL SEASONS  18-04-2010
53 NXMCON4 MH AP,TN,WB ALL SEASONS  18-04-2010
54 PMXC110 MH WB ALL SEASONS  18-04-2010

Silkworm races Introduction


Silkworm breeding is an art to develop better varieties to suit different conditions. Keeping the requirement of the industry in view, various countries have developed races to suit their local agro climatic conditions to increase the quality and productivity. In this context, silkworm races play a very important role in the development of sericulture industry. In tropical countries, high temperature, low humidity, poor rearing management poor mulberry quality, high incident of diseases etc are mainly responsible for partial success of crops at the farmers� level . To suit the such prevailing conditions, robust races are required.

Among various genetic principles and breeding techniques, the utilization of hybrid vigor was one of the major breakthroughs which contributed to the success. Depending upon various factors, different cross-breeding techniques have been employed. Multivoltine (MV) x MV, (ex: PM x C Nichi, PM x C110) mainly for rain fed, low input conditions; MV x Bivoltine (BV) (ex: PM x CSR2, MH1 x CSR2) for average climatic and input conditions and BV x BV ( ex: CSR2 x CSR4 ) for favorable season and/or better input conditions. Research institutes have developed suitable robust BV x BV hybrid combinations ( ex: KSO-1xSP2, CSR18 x CSR19) for average conditions and double hybrids (BV x BV) x (BV x BV ) for high input conditions.

Various research institutes and universities in the country have evolved a number of races suited to tropical climate. Several hybrids have been authorized at national level.

Sl No Combination Hybrid Recommended for Season Authorization Date
1 P2D1 X NB18 CB AP WINTER 31-7-1995
      WB,AS,BH,OR,MP SPRING 31-7-1995
      UP SUMMER, AUTUMN 31-7-1995
2 MY1XNB18 CB WB,AS,BH,OR,MP SPRING, RAINY 31-7-1995
3 NX(NB18XP5) CB WB RAINY 31-7-1995
      AS,BH,OR,MP SUMMER, AUTUMN 31-7-1995
4 HS6XKA BV WB SPRING, RAINY 31-7-1995
      AS,BH,OR,MP SUMMER, AUTUMN 31-7-1995
      JK,OR,MP SPRING 31-7-1995
5 MYSOREXNB18 CB AS,BH,OR,MP SUMMER 31-7-1995
6 CA2XNB4D2 BV AS,BH,OR,MP SPRING 31-7-1995
      JK,UP SPRING/RAINY 31-7-1995
7 NB18XP5 BV AS,BH,OR,MP WINTER 31-7-1995
8 YS3XSF19 BV JK,UP SPRING 31-7-1995
9 HS6XNB4D2 BV JK,UP SPRING 31-7-1995
10 PAM101XNB4D2 BV JK,UP RAINY, WINTER 31-7-1995
11 CC1XNB4D2 BV JK,UP RAINY, WINTER 31-7-1995
12 PAM101XSF19 BV JK,UP RAINY 31-7-1995
13 SKUAST1XSKUAST6 BV JK SPRING 19-02-1996
14 RD1XNB18 CB UP SUMMER,RAINY 31-7-1995
15 BL23XNB4D2 CB RAINFED AREA SPRING  8-5-1997
16 BL24XNB4D2 CB RAINFED AREA SPRING, RAINY  8-5-1997
17 CSR2XCSR4 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  8-5-1997
18 CSR2XCSR5 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  8-5-1997
19 CSR2XCSR4 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  4-5-1999
20 CSR18XCSR19 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  4-5-1999
21 CSR17XCSR18 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  4-5-1999
22 CSR3XCSR6 BV SOUTH INDIA,TEMPERATE SUMMER  4-05-1999
23 KSO1XSP2 BV TROPICAL SPRING, RAINY  4-05-1999
24 APS5XAPS4 BV NORTH INDIA SPRING, RAINY  27-02-2002
25 APM1XAPS8 CB SOUTH INDIA,TEMPERATE SPRING, RAINY  27-02-2002
26 BL43XNB4D2 CB SOUTH INDIA,TEMPERATE SPRING, RAINY  27-02-2002
27 CSR6XCSR26 X CSR2XCSR27 DH THROUGHOUT INDIA SPRING, RAINY  15-09-2005
28 CSR48XCSR5 BV SOUTH INDIA,TEMPERATE SPRING, RAINY  15-09-2005
29 DUN6XDUN22 BV NORTH INDIA SPRING, RAINY  15-09-2005
30 CSR2AXCSR4A BV SOUTH INDIA,TEMPERATE SPRING, RAINY  15-09-2005
31 BL67XCSR19 CB THROUGHOUT INDIA ALL SEASONS  15-09-2005
32 MYSOREXCSR2 CB SOUTH INDIA,TEMPERATE ALL SEASONS  15-09-2005
33 NXYB CB WB ALL SEASONS  15-09-2005
34 BL67AXCSR101A CB SOUTH INDIA,TEMPERATE ALL SEASONS  15-09-2005
35 Varuna(BL24XC.NICHI) CB SOUTH INDIA,TEMPERATE ALL SEASONS  15-09-2005
36 NXM12(W) MH WB SUMMER  15-09-2005
37 APS105XAPS126 BV AP,TN,WB ALL SEASONS  18-04-2010
38 APS45XAPS12 BV TN,JK ALL SEASONS  18-04-2010
39 CSR46XCSR47 BV UK,HP,UP,KR,AP,OR,WB,AS ALL SEASONS  18-04-2010
40 DUN17XDUN18 BV HP,KR,WB,AS ALL SEASONS  18-04-2010
41 GEN3XGEN2 BV AP,TN,WB,AS,JK ALL SEASONS  18-04-2010
42 KSO1XNP4 BV KR,HP,JK ALL SEASONS  18-04-2010
43 NK2XNP4 BV AS,JK ALL SEASONS  18-04-2010
44 SLD2XSLD8 BV KR,AP,TN,WB,AS,JK ALL SEASONS  18-04-2010
45 APDR15XAPDR115 CB KR,WB ALL SEASONS  18-04-2010
46 APM2XAPDR105 CB KR,AP,TN,WB ALL SEASONS  18-04-2010
47 APM3XAPS12 CB KR,WB ALL SEASONS  18-04-2010
48 MCON1XBCON4 CB KR,AP,TN,WB,JR ALL SEASONS  18-04-2010
49 MCON4XBCON4 CB WB,OR,JR,AS ALL SEASONS  18-04-2010
50 MH1XCSR2 CB UP,KR,AP,TN,OR ALL SEASONS  18-04-2010
51 PMXCSR2(SL) CB KR,AP,TN,AS,MN ALL SEASONS  18-04-2010
52 MCON1XMCON4 MH KR,AP,TN,WB ALL SEASONS  18-04-2010
53 NXMCON4 MH AP,TN,WB ALL SEASONS  18-04-2010
54 PMXC110 MH WB ALL SEASONS  18-04-2010

sericulture sericulture sericulture