Studies in the Scrophulariaceae: I. The cytology of <i>Angelonia grandiflora</i> C. Morr. and some related genera

Cyto-genetical Investigations on <i>Lindenbergia indica</i> (Linn.) Kuntze and <i>Mazus japonicus</i> (Thunb.) Kuntze

“…It has been observed in Hebe and Veronica (Frankel and Hair 1937), Angelonia and Scoparia (Raghavan and Srinivasan 1940), Calceolaria (Srinath 1940 a), Striga (Kumar and Abraham 1941) and Russelia (Pal 1961) as well as the present materials. In addition, the figures as presented by Sugiura (1937) on Maurandia, Keck (1945) on Penstemon and Brandt (1952Brandt ( , 1953 on Veronica suggests that secondary association does also exist in many other taxa under this family.…”

“…28-30). Tetravalent and/or trivalent formation has also been noted in some other genera of this family e. g. Hebe (Frankel and Hair 1937), Angelonia (Raghavan and Srinivasan 1940) Calceolaria (Srinath 1940 a), Veronica (Brandt 1952) and Scrophularia (Rodrigues 1956). These trivalents and quadrivalents in Mazus japonicus are found only in the forms of rings and chains.…”

“…Kumar and Abraham (1941), though observed the presence of six groupings in metaphase I in several species of Striga, but concluded that the basic number was eight because on Lindenbergia and Mazus 61 Sugiura (1940) suggested the basic number as six though no evidence was put forward in support of this context. Raghavan and Srinivasan (1940), who made observations on several genera (chiefly on Angelonia) considered the basic number as five. But, as early as 1934, Sakai recorded the basic number as four and this was later substantiated by the observations of Srinath (1939 and1940 b) on a large number of species of Calceolaria.…”

“…Attention has been paid mostly on genera having ornamental or economic importance like Angelonia (Raghavan and Srinivasan 1940) Antirrhinum (Rieger 1957, Gunther andRothmaler 1963), Calceolaria (Srinath 1939, 1940 a and, Digitalis (Angulo-Carpio 1957, Yakar andTozun 1966), Euphrasia (Yeo 1954), Hebe (Frankel andHair 1937, Frankel 1940), Penstemon (Keck 1945), Rhinanthus (Hambler 1962, Tschermak-Woess 1967, Russelia (Pal 1961), Scrophularia (Rodrigeus 1956, Vaarama andHiirsalmi 1967), Striga (Kumar and Abraham 1941), Verbascum (Fernandes 1950, Arts-Damler 1960 and Veronica (Brandt 1952(Brandt , 1953. Witsch (1932) has also made a comprehensive study on several genera.…”

New basic chromosome numbers and cytology for some scrophulariacious weeds of Bihar (India).

“…Plants of the population Lc 0977 and Lc 2077 were 6 to 7.5cm in height, average length of the leaf was about 1.7cm and breadth 1.2cm; internodes about 0.8 to 1.4cm long, branches were 3 to 5 per plant. In contrast to these, the plants of population Lc 0778 were 17 to 19cm in height; the average a Raghavan and Srinivasan (1940). b Biswas (1975) .c Bhattacharyya (1968).…”