Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2003.407.412Pisum
sativum L., with Growth Hormones i.e., Indole-3-acetic Acid and Kinetin
and Heavy Metal i.e., Lead Nitrate]]>ChaudhryNajma Yaqoob RasheedSaima 4200364The morphological features of root and shoot of Pisum
sativum L., were examined after 30 days. The plant was treated with
growth hormones i.e., IAA and Kinetin and heavy metal i.e., Pb (NO3)2.
Hormones and heavy metal were used individually i.e., 50 ppm IAA, 50 ppm
Kinetin and 50 ppm Pb and in combinations i.e., 50 ppm IAA + 50 ppm Kinetin,
50 ppm IAA + 50 ppm Pb, 50 ppm Kinetin + 50 ppm Pb and 50 ppm IAA + 50
ppm Kinetin + 50 ppm Pb. With applied IAA inhibition in length was observed
which was followed by an increase in the diameter in both root and shoot.
Extension growth was observed with Kinetin, however, Pb showed inhibition.
The number of lateral roots showed increase with IAA and Kinetin but inhibition
was observed with Pb. In the mixed doses, length was inhibited. This inhibition
was accompanied by expansion in diameter of root and shoot. Moreover,
lateral roots showed increase. In the internal morphology of root, an
increase in the number of metaxylem elements as well as in the width of
these elements was observed with all treatments except Pb. In shoot, the
increase in the width of epidermal cells as well as in the cortical region,
the number of metaxylem elements, width of these elements and the width
of pith region responded positively with all treatments except Pb. Application
of heavy metal i.e., Pb(NO3)2 revealed inhibitory
effects however, growth hormones i.e., IAA and Kinetin not only balanced
the disturbed growth caused by the heavy metal but enhanced the root and
stem growth to a certain extent.]]>Adams, P.A. and M.A. Ross,198373566568Arteca, R.N.,1996Audus, L.J.,1959pp:178pp:178Botkin, D.B. and E.A. Keller,1995pp: 287pp: 287Chaudhry, N.Y.,19973 on Abelmoschus esculentus (Limn). Moench: Internal structure of root.]]>7109124Chaudhry, N.Y. and A.S. Khan,20003, IAA and kinetin on: 1. Length and diameter of shoot, 2. early initiation of cambium and maturation of metaxylem elements in Cicer arietinum L.]]>312631266Chaudhry, N.Y. and A. Rashid,2000Cicer arietinum L., following treatments with GA3, IAA and Kinetin.]]>312551259Cunning, W.P. and B.W. Sago,19953rd Edn.,pp: 347pp: 347Davies, P.J.,1995pp: 319pp: 319Fatima, Z. and A. Bano,1998Rhizobium on the oil contents, nitrogen fixation and yield of soybean.]]>308386Fox, J.E.,19645251254Hassanein, A.A. and M.M. Shehata,1999Raphanus sativus L. Plant exposed to heavy metal stress.]]>7234254Ivanov, A.Y., V.M. Fomchenkov, L.A. Khasanova and A.V. Gavryushxin,199766490495Jernstedt, J.A.,19847110801089Jouve, L., T. Gasper, C. Kevers and H. Greppin,1999209136142Kato, J.,1958111015Katsumi, M.,196215115121Khan, A.A.,1971171853859Makarova, R.V., E.P. Boes, F. Marthinish, P. Sanches and K. Ranavira,198808184Mauseth, J.D.,1991pp: 348-415pp: 348-415Pilet, P.E. and M. Saugy,1985164254258Powell, R.D. and M.M. Griffith,196035273273Raven, P.H.,1992pp: 545-572pp: 545-572Salisbury, F.D. and C.W. Ross,1992pp: 357-407pp: 357-407Saunder, M.J.,19911991Saxena, H.K. and L. Singh,19823 on growth and rooting of apical fragments of Brassica juncea L. (Czern + cross).]]>25330335Steel, R.G. and J.H. Torrie,19812nd Edn.,Taiz, L. and E. Zeiger,1991pp: 398-425.pp: 398-425.Tuominen, H., L. Pueeh, S. Frink and B. Sunberg,1997115577585Vanderhoef, L.N. and J.L. Key,19689343351Wareing, P.F. and D.L. Roberts,1956Robimia pseudacacia L.]]>55356366Zadoo, K.,19861986Cleland, R.E.,19961996pp: 126-128pp: 126-128Votrubova, O. and M. Votruba,19811981Evans, M.L.,19541954pp: 23-79pp: 23-79Hewitt, E.J.,19631963pp: 97-133pp: 97-133Iqbal, Z.M., M. Rukhsana and M. Shafiq,20002000