Pratap M.,Dr Ysr Horticultural Universityandhra Pradesh
Plant Archives | Year: 2014
To study the effect of spacing and pinching on growth parameters in China aster cv. Kamini an investigation was carried out at College of Horticulture, Rajendranagar, Hyderabad (Andhra Pradesh), India; during rabi, 2013-14. The experiment was laid out in Randomized Block Design with factorial concept and replicated thrice. The study consisted of 12 treatment combinations with three spacings (30 x 15 cm, 30 x 30 cm and 45 x 30 cm) and four levels of pinching (pinching at 20 DAT, 30 DAT and 40 DAT and no pinching). The results revealed that closer spacing of 30 x 15 cm (S1) recorded significantly higher plant height at 90 DAT (54.08 cm). While wider spacing of 45 x 30 cm (S3) recorded more number of primary branches per plant (27.51), number of secondary branches per plant (72.47) and plant spread (44.84 cm) at 90 DAT. Significantly higher plant height at 90 DAT (55.87 cm) was recorded in unpinched plants, while plants pinched at 20 DAT recorded significantly higher number of primary branches per plant (26.62), number of secondary branches per plant (71.83) and plant spread (44.52 cm) when compared to other pinching treatments. © 2014, Plant Archives. All rights reserved.
Rao B.B.,Dr Ysr Horticultural Universityandhra Pradesh |
Ashok P.,Dr Ysr Horticultural Universityandhra Pradesh |
Ramanandam G.,Dr Ysr Horticultural Universityandhra Pradesh |
Sasikala K.,Dr Ysr Horticultural Universityandhra Pradesh
International Journal of Vegetable Science | Year: 2015
Cassava (Manihot esculenta Crantz.) is one of the most widely grown tropical root crops. Tuber yield is a complex quantitative character controlled by several genes, and its improvement depends on the functioning and interaction of several components that vary for different genotypes. A study was conducted to investigate associations among traits and their direct and indirect influences on yield using path analysis and correlation procedures in cassava genotypes to understand how intercharacter relationships influence tuber yield. Genotypes were characterized based on response of qualitative and quantitative characters. Correlation and path coefficient analyses were carried out for characters of yield and its components. Differences were observed among genotypes. Character association indicated that tuber yield·per hectare was positively and significantly associated with petiole length, number of leaves per plant, total leaf area, stem diameter, tuber diameter, plant dry matter content, starch content, and hydrogen cyanide (HCN) content. Path analysis indicated that number of leaves per plant, stem diameter, number of tubers per plant, tuber diameter, and plant dry matter content exerted a high positive, direct effect on tuber yield per plant; the remaining characters had negligible to low indirect effects through other component characters. The high direct effect of these traits appeared to be the main factor for their strong association with tuber yield·per hectare. Copyright © Taylor & Francis Group, LLC.