Varietal Identification Based on Chemical Methods in Different Varieties of Indian Mustard (Brassica juncea (L.) Czern. & Coss.)

Abstract

to distinguish twenty Indian mustard varieties/genotypes based on chemical tests (phenol, modified phenol, KOH, NaOH, Peroxidase and 2, 4-D Auxin). Phenol test grouped variety into three distinct groups viz., dark reddish brown (12 varieties), dark grey (6 varieties) and Dark red (2 varieties). With the help of modified phenol test these varieties were further sub grouped. KOH test grouped varieties into three distinct groups i.e., dark brown (6 varieties), brown (5 varieties) and light brown (9 varieties). These tests clearly differentiated the varieties of one group to that of another groups on the basis of seed coat colour. NaOH test was not reliable for the differentiation of these varieties because all these varieties showed dark brown colour after treating with NaOH solution. Peroxidase test categorized varieties into three groups viz., high (9 varieties), medium (8 varieties), and (3 varieties) while 2, 4-D Auxin test grouped the varieties into three categories viz., tolerant (4 varieties), susceptible (8 varieties) and highly susceptible (8 varieties).

Characterization of Chemical Tests in Different Indica Rice Accessions and Power of Discriminating Rice Subvarieties in North Western Himalayas

“…Based on the response of 200 germplasm lines of rice to chemical tests, a comprehensive key has been developed for rapid identification of rice germplasm accessions. In conclusion, it was observed that the statement, "individually chemical tests are of limited value, but when used in conjunction with each other can separate almost any number of rice varieties[24][25][26][27] was proven in the present study where no single chemical test could distinguish even a single variety but when these tests were used in combination could identify all the two hundred varieties individually. Hence these simple, rapid and reliable tests are of immense value for the varietal identification purpose in rice crop.…”

Varietal Identification of Liberica Coffee in Kepulauan Meranti Riau using RAPD Marker: A Preliminary Study

“…Identification of plant variety or cultivar is one of the essential factors in agricultural system [21,22]. Varietal identification is crucial to ensure the identity of particular genotypes or plant varieties.…”