Light interception and radiation use efficiency of fern- and unifoliate-leaf chickpea cultivars

Abstract

, T. 2008. Light interception and radiation use efficiency of fern-and unifoliateleaf chickpea cultivars. Can. J. Plant Sci. 88: 1025Á1034. A chickpea (Cicer arietinum L.) crop with rapid leaf development, high solar radiation interception, and efficient use of radiation can maximize the yield potential in a short-season typical of the Northern Great Plains. This study determined the effects of cultivars varying in leaf architecture on light interception (LI) and radiation use efficiency (RUE) in chickpea. Six kabuli chickpea cultivars with fern and unifoliate-leaf traits were grown under low (45 plants m (2 ) and high (85 plants m (2 ) population density at Saskatoon and Swift Current, Saskatchewan, in 2003 and. Fern-leaf cultivars achieved consistently higher maximum LI, and greater cumulative intercepted radiation than cultivars with the unifoliate-leaf. Estimated RUE varied largely with growing season, but did not differ among cultivars or between plant populations. Compared with low plant population, high plant population resulted in greater maximum LI in only 1 out of 4 location-years, but higher cumulative intercepted radiation in 3 out of 4 location-years. Our results indicated that future high-yielding kabuli chickpea cultivars for short seasons will benefit from increased canopy LI and seasonal cumulative intercepted radiation via the fern-leaf trait, although the fern-leaf does not further increase RUE. Use of fern-leaf cultivars, coupled with adoption of strategies that promote a rapid canopy development and improved radiation interception are keys to maximizing chickpea yield potential in the short-seasons experienced in the Northern Great Plains. La IL maximale e´tait toujours plus e´leve´e chez les cultivars a`feuilles de fouge`re que chez les varie´te´s unifolie´es; l'accumulation des rayonnements capte´s e´tait aussi toujours plus importante. L'EUR estimative varie conside´rablement avec la saison de croissance, mais elle ne diffe`re pas d'un cultivar a`l'autre ni entre les peuplements. La densite´de peuplement e´leve´e a engendre´une meilleure IL maximale que la faible densite´de peuplement a`un site-anne´e sur quatre seulement, mais elle a entraıˆne´une plus grande interception cumulative de rayonnements a`trois sites-anne´es sur quatre. Ces re´sultats indiquent que les futurs cultivars de pois chiche kabuli a`haut rendement adapte´s a`une courte pe´riode ve´ge´tative profiteront d'une IL plus importante et d'une plus grande accumulation des rayonnements intercepte´s graˆce aux feuilles de fouge`re, meˆme si ce caracte`re ne rehausse pas l'EUR davantage. La culture de cultivars a`feuilles de fouge`re et l'adoption de strate´gies favorisant un de´veloppement rapide du feuillage et une meilleure interception des rayons solaires sont la cle´du succe`s si on veut maximiser le rendement du pois chiche avec la bre`ve saison de croissance caracte´ristique aux grandes plaines du nord.

Breeding has selected for architectural and photosynthetic traits in lentils

“…Interestingly, there was a wide genotypic diversity in fAPAR i in all points measured covering from vegetative to flowering stages, and at flowering, it varied up to 25% across the genotypes assessed (Table 3). These results might differ with environment since we only measured 1 year, but similar genotypic variation also has been observed for light interception in lentils and chickpeas (Hanlan et al, 2006;Li et al, 2008). There were also differences across pulses, in a study comparing chickpea, lentil, narrow-leafed lupin and field pea found that narrow-leafed lupin intercepted more radiation than the other pulse species (Ayaz et al, 2004).…”

“…Variation in lentil canopy architecture has been moderately associated with genotypic variation in light interception ( McKenzie and Hill, 1991 ; Hanlan et al, 2006 ). Plant height in wheat and leaf type in chickpeas have also been associated with changes in LI or RUE ( Miralles and Slafer, 1997 ; Li et al, 2008 ). Studies in lentils have shown variation in architectural traits such as branch angle, number of branches and plant height ( Erskine and Goodrich, 1991 ; Hanlan et al, 2006 ).…”

Impact of low light intensity on biomass partitioning and genetic diversity in a chickpea mapping population

“…Over the longer growing period, these genotypes attained higher PH with greater IL, NPP, and BPP. However, late flowering genotypes, as identified in NL and LL treatments ( Table 2 ), performed better due to maximum light-harvesting, radiation use efficiency, and higher energy production ( Li et al., 2008 ; Bai et al., 2016 ; Shafiq et al., 2021 ).…”

Effects of Planting Pattern and Fungicide Application Systems on Ascochyta Blight Control and Seed Yield in Chickpea

“…Previous studies under semiarid growing conditions showed that blight severity was lower on cultivars with pinnate leaves (such as Amit) than cultivars with unifoliate leaf type (such as CDC Xena) (Gan et al, 2003a). The cultivars with pinnate leaves have greater total leaf area and improved radiation interception than cultivars with unifoliate leaves (Li et al, 2008). This difference in plant morphology may influence retention efficiency of fungicides applied as sprays to the top of the plant canopy (Byer et al, 2006; Armstrong‐Cho et al, 2008).…”

“…The reaction of commercial cultivars currently available in the northern Great Plains ranges from partially resistant to highly susceptible, but no cultivar is totally resistant (Chandirasekaran et al, 2009). Cultivars with pinnate leaves generally have higher levels of resistance than those with unifoliate leaves (Gan et al, 2003a), partly due to differences in canopy architecture associated with leaf types (Li et al, 2008). However, resistance typically declines after flowering regardless of leaf type (Chongo and Gossen, 2001).…”