SCREENING OF TOMATO ACCESSIONS FOR RESISTANCE TO ...

More documents

Recommendations

Info

1: Disease Severity scale 2: Disease assessment oftomato accessions under infection and control 3: Growth performance of tomato accessions. 4: Yield parameter of Tomato accessions
Tomato (Lycopersicon escuientum Mill) is an important source of vitamin C, calories, phosphorus and calcium (Davis and Hobson, 1981; Langer and Hill, 1991).Worldwide, tomatoes are an important part of a diverse and balanced diet (Willcox et ai., 2003). It is estimated that over 62 800 accessions of the cultivated and wild species of tomato (mostly L. escuientum accessions) are maintained in genebanks around the world(Rossi et ai., 1998), Among the nine Lycopersicon species, only" L. escuientum has become a domesticated crop though L. pimpinellifolium (with fruit diameter -1 cm) is also casually planted for consumption(Rick, 1978).The cultivated tomato has limited variability, largely because of several population bottlenecks in the forms of founder events and natural and artificial selections that occurred during domestication and evolution of modem cultivars(Rick, 1976),During the past 70 years wild species of tomato have been utilized in breeding programs to improve the cultivated tomato (Rick,. 1979;.Rick, 1982), According tos (Rick, 1976), domestication of L. escuientum was accompanied by a transition from exerted to inserted stigmas, and consequently changing from facultative outcrossing to enforced inbreeding, It is not known exactly -when domestication of tomatoes occurred, however, by the time the Spanish conquered Mexico in 1523, they were already domesticated (Rick, 1978).
Page 1: SCREENING OF TOMATO ACCESSIONS FOR
Page 4 and 5: My gratitude goes to our Lord Jesus
Page 6: 1.0 Introduction 1.1 Tomato 1.2 Bot
Page 11 and 12: of the major tomato diseases. Most
Page 13 and 14: · . plant roots, but seem not to i
Page 15 and 16: most frequently produced within the
Page 17 and 18: from Chaetomium globusum that have
Page 19 and 20: Dextrose Agar (PDA) and incubated a
Page 21 and 22: % range scale Value 1-20.0 1 Resist
Page 23 and 24: to strain 1. A common feature on th
Page 25 and 26: TABLE 3: Growth performance of toma
Page 27 and 28: The tomato accessions were found to
Page 29 and 30: · different disease suppressive me
Page 32 and 33: Olivain C. And Alabouvette C. (1999
Page 34: Sood, S.G. (2003). Chemotactic resp

SCREENING OF TOMATO ACCESSIONS FOR RESISTANCE TO ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?