Correlations between biometrical characters in vanilla (Vanilla planifolia Andrews)

A study was undertaken to fmd out the extent of association among growth attributes of vanilla (Vanilla planifolia) and to develop a model for determination of vine length based on biometrical observations. The characters, number of nodes, number of leaves and internodal length were significantly and positively correlated with vine length. The multiple regression equation derived exhibited a precision of 82.5 per cent. &nbsp

Correlations between biometrical characters in vanilla (Vanilla planifolia Andrews)

A study was undertaken to fmd out the extent of association among growth attributes of vanilla (Vanilla planifolia) and to develop a model for determination of vine length based on biometrical observations. The characters, number of nodes, number of leaves and internodal length were significantly and positively correlated with vine length. The multiple regression equation derived exhibited a precision of 82.5 per cent. &nbsp

Performance of turmeric (Curcuma longa L.) varieties in lower Pulney hills of Tamil Nadu, India

Eight turmeric (Curcuma longa) varieties were evaluated under rainfed conditions for two crop seasons at lower Pulney hills, Tamil Nadu, India. The varieties differed among themselves with regard to yield and growth characters such as plant height, number of tillers per plant, leaves per tiller, leaflength and breadth and curing percentage. Suvarna (PCT-8) had maximum number of tillers per plant but was inferior to others in relation to other growth traits. The highest yield (t/ha - fresh rhizomes) was recorded in BSR-l (20.88), followed by Suvarna (19.32) and Suroma (19.04). &nbsp

Yield forecasting in cardamom (Elettaria cardamomum Maton) plantations under intensive management

A study was undertaken to develop a model for forecasting the yield in cardamom plantations under intensive management. Thirteen biometrical characters namely tillers per clump, tiller height leaves per tiller, vegetative buds per clump, bearing tillers per clump, panicles per clump, panicle length, racemes per panicle, capsules per raceme, seeds per capsule, leaf length, leaf breadth and recovery percentage were chosen as explana tory variables and they exhibited a precision of about 82%. Step down regression resulted in the retention of only four characters namely, panicles per clump, racemes per panicle, capsules per raceme and leaf breadth with which yield can be estimated with around 77% precision. &nbsp

Factor analysis in cardamom (Elettaria cardamomum Maton)

A pooled factor analysis of 17 variables representing morphological, yield contributing and qualitative characters of 90 genotypes of cardamom (Elettaria cardamomum) was carried out at Myladumpara (Kerala), for identifying marker characters which accommodate the inheritance of associated characters. Among the 17 characters subjected to the analysis, 6 factors were identified as having maximum influence on growth, yield and quality of cardamom. Among the six factors identified, three factors controlled yield and yield contributing characters, two factors controlled qualitative characters and one factor controlled growth characters. The characters identified with maximum factor loadings in each group include bearing tillers clump-I, seeds capsule-I, internodal length, racemes panicle-I, leaf breadth and capsules (dry) kg-I. The six principal components or factors accounted for 78.09% of the total variance. &nbsp

Micropropagation of curry leaf (Murraya koenigii L.)

Micropropagation of curry leaf (Murraya koenigii) was standardized using nodal segments from mature trees on Murashige and Skoog media supplemented with 6-benzylaminopurine, kinetin, =naphthaleneacetic acid and ind'Ole-3-butyric acid as growth regulators. A multiplication ratio of 1:3 was observed over a 5 week culture period on media with benzylaminopurine (1.0 mg l-1), kinetin (0.5 mgl-1) and naphthaleneacetic acid (0.1 mg l-1). The best response of 1-2 roots per shoot was obtained on medium containing naphthaleneacetic acid and indolebutyric acid (0.1 mgl-1 each). &nbsp

In vitro propagation of Vanilla tahitensis Moore

A commercially viable protocol for mass propagation of Vanilla tahitensis, a cultivated species of vanilla, was standardized. A multiplication ratio of 1 : 4.7 was observed over a culture period of 60-70 days on benzylaminopurine (1 mgl-1) and a-naphthaleneacetic acid (O.1 mgl-1). &nbsp

In vitro propagation of Vanilla tahitensis Moore

A commercially viable protocol for mass propagation of Vanilla tahitensis, a cultivated species of vanilla, was standardized. A multiplication ratio of 1 : 4.7 was observed over a culture period of 60-70 days on benzylaminopurine (1 mgl-1) and a-naphthaleneacetic acid (O.1 mgl-1). &nbsp

Micropropagation of curry leaf (Murraya koenigii L.)

Micropropagation of curry leaf (Murraya koenigii) was standardized using nodal segments from mature trees on Murashige and Skoog media supplemented with 6-benzylaminopurine, kinetin, =naphthaleneacetic acid and ind'Ole-3-butyric acid as growth regulators. A multiplication ratio of 1:3 was observed over a 5 week culture period on media with benzylaminopurine (1.0 mg l-1), kinetin (0.5 mgl-1) and naphthaleneacetic acid (0.1 mg l-1). The best response of 1-2 roots per shoot was obtained on medium containing naphthaleneacetic acid and indolebutyric acid (0.1 mgl-1 each). &nbsp

Natural fruit set in Vanilla wightiana Lindl., an endangered species from Andhra Pradesh, India

Vanilla wightiana Lindt, described as an extremely endangered wild species, occurs in the Eastern Ghat forest ranges of East Godavari District of Andhra Pradesh, India. &nbsp