INHERITANCE OF SOME QUANTITATIVE CHARACTERS IN BRASSICA CAMPESTRIS L.
ABSTRACT:
The data collected for four quantitative characters have been analysed by biometrical techniques. Estimates of k1 indicated the presence of 1-2 effective factors. Where as those of k2 sujjested the presence of 4-14 effective factors operating for the characters studied.presence of overdominanceand complete dominance was observedin heading-ti-ripening and sowing-to heading period respectively,where as in the remaining characters no dominance was noted. Transgressive segregation was indicated in both directions for all the characters.

Study of invertases from taraxacum roots
ABSTRACT:
PH specificities of invertses from the roots of taraxacum officinale have been investigated. Two acidic and one neutral invertases were found to be present in this root. The acid invertases were more effective in hydrolyzing sucrose than the neutral one. Paper chromatographic separation of these enzymes have shown that all three different rf values.

Somatic recombination in common-A heterokaryons of schizophllum commune
ABSTRACT:
Common-A heterokaryons of schizophllum commune developed from auxotrophio parents were used for studying somatic recombination and. If possible isolating vegetative diploid strains. A simple method was devised for this purpose , whivh comprised the growth of the heterokartons first in liquid minimal medium.than the fragmentation of th resultant mycelia and subsequently the plating of the fragments on minimal agar to select colonies differing from the “flat” heterokaryons types. The selected colonies were isolated and analysed both for nutritional requirements and mating type factors. Genotypes resulting from recombinations between two parental nuclei of a heterokaryon could be detected. The probable mechanism of their formation and the usefulness of the echniques in selecting them have beeb discussed.

Carbondioxide compensation values in some members of the
ABSTRACT:
None of the 24 strains belonging to 14 species of oryza had low CO2

Biochemical studies in the developing and ripening banana. changes in the contents of total carbon, starch, sucrose, glucose and frutose
ABSTRACT:
In developing and ripening banana fruits the dry matter was found to increase gradually with age followed by a small decrease at the ripening stage. The total carbon contant of banana followed a similar curve. The starch content increased gradually from early stage to full maturity, while there was hardly any change in sugar contents during this period. During ripening starch content decreased with a concomitant rise in the sugar content. Glucose and sucrose were found to be the major sugars in young and ripe banana respectively.

Effect of potassium naphthenate on ribonucleic acid in the leaf of phaseolus vulgaris l.
ABSTRACT:
The RNA of leaf tissue of phaseolus vulgaris l. var. top crop treated with potassium naphthenate and subsequently incubated with 32P, was extractd and fractionated by sucrose gradient method. acomparision of result i.e., radioactivity and O.D. showed that there was more RNA synthesis in potassium naphthenate treated plants than in those of control. An unidentified fraction of RNA showed highest in corporation of 32P in treated plants. In addition , there was more 32P incorporation in 28 S---. 18---, and 4S RNAs of treated plants than in those of control.

Physiological studies on collectotrichum dematium f. truncate, the fungus anthracnose of phaseolus mungo linn
ABSTRACT:
Conidia of collectotrichum dematium f. truncate, the fungas isolated from diseased stems of phaseolus mungo showed good germination in dextrose solution of differeny strengths as well as in distilled water, and 2 % aquous solutions of sucrose and lactose. Its growth and sporulation was best after 15 days in hasal agar medium containing sucrose and dextrose respectively. The minimum , optimum, and maximum temperatures for its growth and sporulation were found to be about 20, 30 and 35 C. the nitrogen source best suited to this fungus was found to be ammonium nitrate. A pH of 4.8 was most suitable for the growth of the fungus. Its sporulation was best between a pH range of 6.1 and 7.8.

Responses of various organs of solanum melongena to different nutrients in callus formation.
ABSTRACT:
The anthers of the two varieties of solanum melongena were found to require different media and different supplements for callus formation. The different parts i.e. fruit, filament, style, and sigma of the same variety could be induced to callus but by different media and supplements. The probable reasons for such differential responses to nutrients media are discussed.

The genus euphorbia l. in dacca
ABSTRACT:
The genus euphorbia l. is represented in dacca . last Pakistan by twelve species which, following the treatment of pax and Hoffman. Are arranged here under sections .inisophyllum, poinseuia and

Genetic system in rhynchosia minima and R. memnonia (legominoseae)
ABSTRACT:
No abstract

Determination of genomic relationship in the genus corchorus , C. olitorius X C. depressus and C. capcularis X C. depressus through improved techniques.
ABSTRACT:
When emasculated under strictly controlled conditions, no hybrid in the cross, C. olitorius x C. deoressus, C. copsularis x C. depressus was obtained. Hybrid formation is not possible in the above combinations because in both the polln tubeof C. depressus fail to reach the ovule of the cultivar. Application of 300 mg/l IAA around the pedicel of the pollinated flower, however, made it possible to obtain hybrids in both combinations. These hybrid were near sterile, more so in the cross, C. olitorius x C.depressus in the letter hybrid , chromosomes were found to be sticky. Meiotic irregularities characterized the hybrids of both combinations. There was however enough fertility for the F2 generation to be raised.