Correlation, regression and path analysis of seed yield and yield components in canola cultivars (Brassica napus L.)

Subject Areas : New Finding in Agriculture

S. Z. Hashemi ¹ (M. Sc. in Agronomy, Islamic Azad University, Khorasgan Branch, Iran)
A. R. Golparvar ² (Assist. Prof., Islamic Azad University, Khorasgan Branch, Iran)
M. Rasouli ³ (Islamic Azad University, Takestan Branch, Iran)

Received: 2015-12-03 Accepted : 2015-12-03 Published : 2008-08-22

Keywords: Correlation analysis, Path analysis, Canola, step-wise regression, indirect selection,

Abstract :

     In order to assessment of relationship among grain yield and different traits and determination of the best indirect selection criteria for genetic improvement of grain yield in canola a randomized complete block design with three replications was conducted using 17 cultivars. Correlation coefficient analysis of grain yield showed positive and significant relationship between selected trait with traits days to shooting, days from planting to full flowering, plant height, number of grain/pod, 1000 grains weight, biological yield, harvest index, grain oil percent and oil yiel. Step-wise regression of grain yield as dependent variable and the other traits as independent variables revealed that 98.9% of variation exists in grain yield accounted for by the traits biological yield, harvest index, days to flowering initiation and number of grain/pod. Path analysis for grain yield based on traits that correlated positively and significantly with this trait designed high efficiency of traits 1000 seeds weight, biological yield, harvest index, days to shooting and number of grain/pod as indirect selection criteria for genetic improvement of this trait in canola cultivars especially in early generations of breeding programs.

References:

1- باقری، ح. ر.، صفری، س.، حیدریان، ع. و یوسفیان، ز. 1386. بررسی روابط بین صفات و تجزیه ضرایب مسیر برای عملکرد دانه و روغن ارقام کلزا. مجموعه مقالات اولین سمپوزیوم کلزا و روغن کانولا. دانشگاه آزاد اسلامی واحد شهرکرد. 300 صفحه.

2- فرهودی، ر.، کوچک‌پور، م.، و صفاهانی لنگرودی، ع. ر. 1386. بررسی مکانیسم‌های تحمل به شوری در سه رقم کلزا. مجموعه مقالات اولین سمپوزیوم کلزا و روغن کانولا. دانشگاه آزاد اسلامی واحد شهرکرد. 300 صفحه.

3-Agrama, H. A. S. 1996. Sequential path analysis of grain yield and its components in maize. Plant Breeding. 115: 343-346.

4-Algan, N. and Aygün, H. 2001. Correlation between yield and yield components in some winter rape genotypes. In Turkish. The journal of Ege University.  Agricultural Faculty. 38 (1): 9-15.

5-Board, J. E., Kang, M. S. and Harville, B. G. 1997. Path analysis identify indirect selection criteria for yield of late planted soybean. Crop Sci. 37: 879-884.

6-Çalışkan, M. E., Mert, A., Mert, M. and İşler, N. 1998. Important agronomic characters of some rapeseed cultivars and effects of these characters on yield formation in Hatay ecological conditions. J. Agricultural Faculty MKU. 3 (2): 127-142.

7-Dawari, N. H  and Luthra, O.  P. 1991. Character association studies under high and low environments in wheat (Triticum aestivum L.). Indian. J. Agric. Res. 25: 68-72.

8-Dewey, D. R. and Lu., K. H. 1959. A correlation and path-coefficient analysis of components of crested wheat-grass and production. Agron. J. 51: 515-518.

9-Farshadfar, E., Galiba, G., Kozsegi, B.  and Sutka, J. 1993. Some aspects of the genetic analysis of drought tolerance in wheat. Cereal Research Communications. 21: 323-330.

10- Fathi, G. S., Siadat, A.  and Hemaiaty, S. S. 2003. Effect of sowing date on yield and yield components of three oilseed rape varieties. Acta. Agronomica. Hungarica. 51: 249-255.

11-Li, C. C. 1956. The concept of path coefficient and its impact on population genetics. Biometrics.12:190-210.

12-Özer, H., Oral, E.  and Doğru, Ü. 1999. Relationships between yield and yield components on currently improved spring rapeseed cultivars. Tr. J.of Agriculture and Forestry. 23: 603-609.

13-Rai, M., Kerkhi, S. A., Nagvi, P. A., Pandy, S.  and Vashishta, A. K. 1993. Path analysis for quality components in linseed (Linum usitatissimum L.). Indian. J. Genet. 53 (4): 381-386.

14-Rao, C. S., Rao, A. V.  and Prasad, A.  S.  R. 1991.  Effect of inadmissible paths in path analysis. Indian. J. Agric. Sci. 61: 471-475.

15-Sheikh, F. A., Rather, A. G. and Wani, S. A. 1999. Genetic variability and inter-relationship in Toria (Brassica campestris L. var. Toria). Advances in Plant Sciences. 12 (1):139-143.

16-Tang, Z. L., Li, J. K., Zhang, X. K., Chen, L and wang, R. 1997. Genetic variation of yellow-seeded rapeseed lines (Brassica napus L.)) from different genetic sources. Plant breeding. 116: 471-474.

17-Yap, T. C. and Harvey, B. L. 1972. Inheritance of yield components and morpho-physiological traits in barley (Hordeum vulgare L.). Crop Sci. 12: 283-286.